Mr. Big was certainly jealous of the other men in Carrie’s life, but Aidan always felt different. Yes, he seemed threatened by his existence at first. Still, unlike with the Russian or Berger, Mr. Big seemed to sense, deep down, that Aidan wasn’t so bad. We think Mr. Big would want Carrie to move on with someone protective and kind. Aidan would fit that bill perfectly.
Aidan and Mr. Big actually seemed to come to an understanding in season 4
Mr. Big disliked the men Carrie dated. He had opinions about Aleksandr Petrovsky and certainly didn’t see Jack Berger as a real prospect. Mr. Big also tried to prevent Carrie from dating Ray, the Jazz musician. Aidan was the only one of Carrie’s men that Mr. Big seemed to accept as important.

While the men certainly battled in season 4 of Sex and the City, they came out of that with mutual respect. At the very least, they managed to get along enough to sit down at a table together and discuss Mr. Big’s romance issues. If Mr. Big and Aidan came to some sort of truce, we imagine Carrie moving on with Aidan after Big’s death probably wouldn’t upset him.
Read Related Also: Kylie Jenner is bra-free in a white tank top and black undies
What about the Kiss in ‘Sex and the City 2’?
While we’d like to think Mr. Big would be happy for his wife to move on and enjoy life after his death, there is one reason we can think of that might make Aidan his least favorite choice for Mrs. Carrie Preston. In Sex and the City 2, the much-maligned second movie, Carrie and Aidan ran into each other at an open-air market in Abu Dhabi. The chance encounter led the duo to grab dinner together, and then they shared a kiss.
The kiss upset Carrie. She opted to deal with it by calling Mr. Big and confessing to him. Mr. Big responded by ending their phone call. He eventually went out and bought her a ring so she would remember that she was married in the future. The ending was pretty sweet, but Carrie and Mr. Big never really talked about Aidan. Fans never learned how he felt. If he was angry with Aidan for swooping in on Carrie, we never saw it. We imagine he wouldn’t be pleased with his wife’s pick for her next great love if he did blame Aidan.