Mason Wallace, Marine recruiter accused of grooming, raping LI HS student, was former sexual assault advocate

A married US Marines recruiter who counseled sexual assault victims is charged with grooming and raping a 16-year-old Long Island girl — admitting to her, “I’m a dirty old man and you love it,” according to the victim.

Staff Stg. Mason H. Wallace, 28, was charged with third-degree rape after allegedly manipulating the teen’s interest in the military to spark the depraved relationship.

“I would look back at my messages with him and he said some weird things. At the time, I didn’t notice it was like grooming, but it is grooming,” the victim exclusively told The Post.

Wallace, who served as a sexual assault advocate for the Marines before becoming a recruiter out of Patchogue, met the victim during his first recruiting visit to Longwood High School in October, the teen revealed.

“He continued to speak to her about enlisting all this time as if the Marine Corps were his pimp and he, their prostitute,” the victim’s mother revealed to The Post.

As a Sexual Assault Prevention and Response Victim Advocate with the Marines, Wallace was tasked with helping sexual assault victims recover from their attacks, serving as a go-between for resources and information.


A flyer showing Wallace in his role as a Sexual Assault Prevention and Response Victim’s Advocate at his previous duty station.
A flyer showing Mason Wallace in his role as a Sexual Assault Prevention and Response Victim’s Advocate at his previous duty station.

Wallace was not working as a victim advocate while on recruiting duty but used his status to lure in the alleged victim.

Her family’s ties to the military and fascination with video games drew her to Wallace when he arrived in his Marine Corps uniform, the victim disclosed. 

She says the two built a rapport over her possibly enlisting in the corps.

The two later exchanged contact information through Discord the following month “in hopes of talking about the Marines and possibly playing [Call of Duty] together,” according to the victim.


Wallace in his dress bravos.
Wallace allegedly would talk about recruiting the teen throughout his alleged criminal ongoings.

“He knew what he was doing. He was fully aware. He’s not stupid. He’s a recruiter,” the victim claimed.

The two began sending flirtatious texts in December once the victim expressed to Wallace she had a crush on him.

“Instead of being a decent human being and reporting this to the school guidance counselor or her parents, he told her he was ‘flattered’ and continued to flirt,” the victim’s mother said.

Wallace allegedly used a home visit the next month to play video games at the teen’s house while her mother wasn’t home — or aware the recruiter was visiting.

After playing some games Wallace “talked about the military” before asking her to kiss him, according to the victim.

“I just kind of moved away from him because we’re on my bed. But he kept asking,” she recalled. “So I gave him a little peck on the lips, and he was like, ‘Oh, see, it wasn’t that hard’ in the weirdest tone ever.”

Wallace was married throughout the alleged illicit relationship.
Wallace was married throughout the alleged illicit relationship with the high school student.
A snapchat photo Wallace allegedly sent from inside the recruiting office in Patchogue.
A Snapchat photo Wallace allegedly sent from inside the recruiting office in Patchogue.

The Marine continued his sexual advances toward her, which led to unprotected, statutory rape, according to the teen. 

Concerned about pregnancy, the victim claims she messaged Wallace after he left, saying she didn’t know what to do with a “mini Mason,” to which he allegedly replied, “I can tell you what I would do. Go to prison.”

“At some point, he was like, ‘Oh, do you want to be like my girlfriend?’ I’m like, ‘I guess, whatever that entails.’ And he’s like, ‘OK.’ So he kept calling me his girlfriend,” the victim alleges.

In the second meetup with Wallace, the teen says they went for a walk in the woods near her home and talked more about the Marines.

The victim told Wallace she was unsure if the Corps was a good fit for her, to which he allegedly replied, “I think you have a lot more Marine in you than others,” followed by a perverted laugh, the teen claims.


Wallace at recruiting school
The victim also alleges that the recruiter and she exchanged multiple explicit messages and photos during the depraved relationship.

During the walk, the victim alleged Wallace groped and kissed her and said, “I’m a dirty old man and you love it,” but was also cautious at times, telling her he couldn’t hold her “hand or kiss” her in public given his status as a recruiter.

On Feb. 7, Wallace allegedly came to her home again unsupervised. The two again had sex, this time using protection, and Wallace allegedly told the teen he would set up a recruiting appointment for her and her mother.

“I remember he put his clothes on. He looked over at me on my bed, and then he was like, ‘I’m going to fill an appointment card for you today.’ And I’m like, ‘Oh, OK.’ I told him not to, but he was like, ‘Well, I’m going to,’” according to the victim.

That same day, a concerned friend from another school district informed her high school about the victim and Wallace’s relationship, prompting them to contact Longwood.

The school contacted the victim’s mother, but according to her, did not reveal the seedy nature of the relationship, forcing the victim to detail the disturbing affair.


Longwood High School.
The teen said she met Wallace during his first recruiting visit to Longwood High School in Suffolk County, New York.
Google Earth

The victim’s mother quickly contacted the Suffolk County Police Department and Wallace was arrested on Feb. 16.

A condom containing “fluid” and the teen’s phone were taken into evidence by the SCPD on Feb. 7, The Post confirmed.

Throughout the alleged relationship, the pair exchanged many explicit messages and photos over various communication apps, according to the victim.

“I didn’t want to believe Wallace didn’t actually love me and care for me but the more I read the messages from him the more blatantly obvious his manipulative behavior was,” the victim said.

The Longwood School District — despite allegedly being aware of the recruiter’s misconduct since early February — informed parents Wallace had been banned from school grounds and arrested in a letter sent out by the superintendent on March 27, the victim’s mother shared with The Post.


The letter that was sent out by the Superintendent of Longwood School District on March 27, 2023 informing parents in the community about Wallace and one of their students.
The letter that was sent out by the Superintendent of Longwood School District on March 27, 2023, informing parents in the community about Wallace and one of their students.

In March, a school official allegedly advised the victim to take a week off after she was subjected to victim-blaming rumors following Wallace’s arrest, according to the victim’s mother.

The school then allegedly tried making the teen join a late afternoon school program to complete her education requirements — which her mother refused, believing it was an attempt to hide her daughter.

When reached for comment, the Longwood School District referred The Post to the letter it sent to parents on March 27.

“The Marine Corps takes allegations of misconduct seriously; they are thoroughly investigated and handled at the appropriate judicial or administrative forum,” the branch told The Post.


Wallace's lawyer told The Post his client maintains his innocence until proven guilty.
Wallace’s lawyer told The Post his client maintains his innocence until proven guilty.

The victim’s mother challenged the Marine Corps to be more accountable for who they send out to high schools to recruit, saying the “violation of innocence and theft of trust might not have happened.”

Wallace was immediately suspended from his recruiting duties following the initial allegations, The Post confirmed. 

Wallace could face up to four years in prison and be forced to register as a sex offender if found guilty.

Wallace’s lawyer said his client maintains his innocence until proven guilty.

The recruiter is due back in court on May 31.

“I hate him for what he did to [my daughter], to my family,” the victim’s mother said. “I can’t even imagine what his own mother must think.”

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