Idk at this point

Okay, so lemme make the situation more clear
My bf has a chicks name with a <3 , in his Instagram profile. I check who the girl is and it's one his girl bsf, which, I don't really mind bc I hang out with my girl bsfs as well.
I didn't really touch Instagram the past couple days because I was sick(I barely touch it in the first place), so I talked to my bf over the phone or text.
I did talk to him about this js now and he said it's nothing to worry about.
I'm fr thinking he is playing my ass atp bc this has happened to me twice and even if he is innocent, I don't wanna go through some emotional bs. Then again, I am probably overreacting over a small situation (I'm paranoid after almost everyone I dated cheated on me)