How would you feel in this situation ?

Reposting because last post got no response!!

So I’ve almost been with my boyfriend for two months . He’s always been known as the really friendly type and hangs out with girls and stuff but just as friends . My best friend , is his best friend too , before we dated he would stay the night at her house and go to her house almost every Friday . I would never think that him and her would ever do anything and I trust both of them . ( she has a boyfriend anyways ) it’s just there’s this one girl , let’s call her Emily . Well Emily has always been known as a flirty girl and flirts with everyone . All of my friends and even my boyfriend bestfriend all think she flirts with him , but he doesn’t ! He says she doesn’t like him or anything when she ask him to hang out alone all of the time . I trust my boyfriend but I don’t trust her , I sometimes get jealous though and I try to hard to and I just act like it doesn’t bother me . He sometimes walks to her class or waits at her locker and he rarely does this with me . I believe that they are just friends and nothing is going on , but also it still hurts my feelings because idk I feel like he is giving other girls more attention then me . Would you guys get jealous if this was happening ? I’ve talked to him multiple times but he tells me that they are just friends .