Am I overreacting?

Am I over reacting?

There’s this girl that works at with my boyfriend & Iv been watching her since he started working. She’s got black hair and she’s tall so you get the visual imagine. Well today I took my boyfriend to work and she was in black agoing in with booty shorts on so you couldn’t see them because her shirt was too long. The way he got out the car was unreal. He said “alright I love you bye” gave me a kiss got out in a hurry and the whole time he was walking fast behind the girl into the warehouse to keep up with her. & that’s not the first time he’s walked behind or in front of her but he’s never gotten out the car that fast & he wasn’t late either so he can’t use that excuse. I’m very insecure about my figure as it is and he knows that & it’s just about everytime in public I catch him and I call him out and every time he denies it.