Boyfriend help

hey so it goes pretty much like this i have been with my boyfriend for almost 7 yrs since grade 10. crazy eh? when we were in skool he was really good friends with my enemy but i didnt care cuz it is he choice to be friends with who ever he wants so i never said anything. i knew she was in love with him but he was always with me so i was never worried about him cheating at all. me and her started bickering and i was just a jealous idiot at that time and told her the fuck off pretty much cuzz i was gettin sick of her and my bf had tried to express this to her as well but she wasnt gettin it. so after many months of her just showin up at my house house parties at my house i tried to tell her agian that she was crazy and i didnt have patience with this shit. she then told me to get real and that if she wanted my boyfriend she could have him any time she wanted. i was furious and this ended in a large physical fight. then months passed and i graded and my bf did not due to a large family problem in grade 11 so he was a yr apart. i told him when he started going back to skool not to talk to her cuzz it would just lead her on and she would start her crazy shit agian. so he swore up and down that he would not. he never did. we moved shorrtly and all this shit got put on pause only to have to move back. he got a job at a local resturant as a cook. so she found out and got a job as a waitress i was furious but i was going to let him deal with this to see wat he would do he begian talkin to her agian. i told him to stop or im done. so he stoped. this is when we had madde a new friend who was actually head over heals in love with the same girl. my friend eventually moved in with us and all was cool. i was like dude i dont care if she comes here when im not here cuzz you pay rent and it isnt fair to say that so i was very cool about it. all three of us my bf my friend and i moved into another apartment about an hr away and she was out of my life i was so happy and me and my bf were happy. on for him to start a new job and have it all happen agian with a different girl. she would sent him msgs. i new his password so i read some of them he never respnded to them but still something had to happen for her to be like this. then a mutal friend of my bf me and the girl msged my bf and was like there are pictures online if you wanna see them. i asked him befor i looked at the pictures were and to be honest and he told me nothing. so i beleived him. i thought they were nothing. only to soon look at the pictures and see that it was her laying on his lap.i asked him how he could let her do this cuzz i would never think of doing this. he said that he was sorry and that he would stop talkin to her and he did.she then would msg me and tell me she was going to kill me and make it so they could be together and a lot of other crazy shit.so this was fine i was fine i was very hurt but i got over. im a pretty care free person im chill and dont like confrotation. only to be sitting at home a couple of nights ago while he is at work and my friend who lived with us the whole time who has grown to be one of my best friends tells me that he cheated on with the first girl on new yrs a year and a half ago. this was the new yrs that i was working. i bartended. me and him arranged for him to come and see me so we could spend new yrs together only for him to ditch out and fuck some one else. he says that he dosnt remeber any of this at all. cuzz he was wasted. im tryin to forgive him cuzz he is still my bestfriend he fucked up the boyfriend aspect. everything we have is together. our bank acount. our new car everything. i am not workin right now. i have no money to move i actaully have no money at all i am 2000 in debit so i dont know wat to do help please im so sad and lonely and my family isnt helping pllease help