My boyfriend is making me go psycho? ?

Okay, I really need someone to hear me out. My bf & I have been going out now for a year & 6 months. Our relationship was VERY bumpy at first. I had trust issues. I would act hard & not let anything fool me & that's why most of the time I got revenge on him by breaking up with him & dating another guy for less than a day. It was all out of revenge after he threatened me to get me back twice as bad for an incident. I wasn't taking bull. I've done a lot to him. Stuff that hurts him like talk to other guys or hug them or so. Now I understand why he doesn't like that because honestly the guys I did that to were flirts & nobody likes their bf or gf by a flirt. He's done messed up things too but he always makes me feel bad because I've done "more" than him. Although I tell myself that it doesn't matter the number but the amount of pain was inflicted I'm starting to not believe it. I feel like I'm a hoe that nobody wants. My bf gets mad because I go to places more than him & threatens to break up with me . For instance, I went to my BFF bday party last week & he didn't want me going because last year I took a pic with 2 guys out of revenge (a random guy & my ex from more than 5 years ago which I have no feelings for). I know I used to be bad. :/ but bottom line now I'm not. I felt it was an obligation to go to my BFF's party because she's ALWAYS there for me than anybody! **** she's the only one I have after my bf because I was left with nobody after my other ex since he didn't like me with anybody either. Idk if I'm letting the same story happen again but now that I shed my hard shell it seems like he's taking advantage of my feelings. I messed up I know but really? Until when? Now he wants to go to a waterpark with his friend & his older sister with her GIRL friends. I feel uneasy since we just got into an argument. Plus idk these girls. He claims he didn't know some guys who went but I was there for a birthday party for my friend; a special occasion.