Okay my EviE bff, I need some advice!😬

Okay best friends🙄, idk if y'all remember me telling you guys back in December that I was meeting up with my 5 yr old childhood crush with hopes of us becoming more and coming to find out he was hoping for the same thing😁😍😁 and we've been dating ever since 😊and it has been amazing😍☺️😎but to speed you up to date everything is still lovely BUT🙄 his ex's keep popping up !😠 like when we 1st started dating he had an ex's purse in his trunk! Along with a whole lot of other junk😒. But he threw it away. One called him on our 1st official date😐 one wrote on his wall on fb and another one today posted a throwback picture of them on Facebook😑😐😑😐.. and the kicker is.. he LIKED IT!! So I asked him like "yo what's up with that??" Ya know? So he's like idk why she posted that like I haven't even talked to her 😰 but he had posted a few pictures of us on snap chat and the chick asked him who tf am I and if I know that he belongs to her.... BIIIIIIIHHHHHHHH!!!!!!.. but, I can say that he put her in check right there in front of me and he told me he would remove the tag and tell her that she can't post and tag him in stuff like that. But how should I feel about her posting a pic of them from 3 years ago?