He’s cheated in the past

I was at the gas station with my boyfriend and he was in the store and i decided to get out and pump.. i noticed a girl looking at me with a grimy smirk on her face and she just kept staring at me and i got annoyed and decided to get back in the car and when he comes out she’s gone…

She never got out her car, no one else got out her car.. she didn’t get gas or nothing.. she just pulls ups and has one hand on her cheek just giving me a smirk…

He asked what’s wrong and i told him about it and he ask what did the car look like and i said i wasn’t really paying attention to that and he just got quiet.. he didn’t say anything about it and changed the conversation basically..

I keep thinking maybe I’m thinking to hard about it but I’ve been having a gut feeling he’s cheating i just can’t prove it… he already knows if anything happens our relationship is over and there’s no apologies or working it out this time.

I just don’t know how i feel about that whole situation..