Okay so me and my bf have been together for 7 years & we had broken up in the past in high school so during that time he got together with this other chick to try to get over me... So that whole deal fucked with my head because his dumbass ended up getting an STD from her for being a dog and passed it on to me when we got back together (Mind you I didn't know they had already had sex before we got back together or else I would of moved on but Thank God it wasn't that serious & was able to get rid of it) & I'm just assuming it came from her since she was known as being a whore in high school but anyway... It has been very hard for me to get over it till this day & it's been 3 years since then. So just now I was putting my bfs phone to charge & I seen he had a fb notification so I unlocked his phone to check it out & guess who it's from... That Bitch! Apparently they just became friends on Fb because fb decided to send him a msg saying they can now message each other because they are now friends. I am so confused as to why in the hell he would even add her or think it would be okay if for 1 That whole situation with her almost broke us up for good, 2. She is an ex & should be kept in the past, 3. He knows I would have a problem with it & 4. What did he expect to get out of it by being back in touch with her if he would talk shit about her & how he wishes he never met her because of the std situation. I didn't even know his fb password but I was on investigation mode & did what I had to do to get in there and see wtf she wanted lol but now if I confront him about it I know he's going to try to pull the " why are you going through my personal things for? " UGH!! What should I do should I confront him about it or should I let it go since he didn't get the chance to talk to her cuz I deleted & blocked her skanky ass!! He is such an idiot idk y I'm even wasting my time... He takes care of me good and all but he always fucks up some how...

Let me know your opinions Girls! What would you do?