HELPPPPP! My heart has been broken and ive never been through this before lost 1st love what do i do, advice?

sir, you two have a long history it sounds, and for a long time now, she has used you as a back up in case the other guy(s) she see's doesn't work out..she told you from the beginning she didn't like you, and that's putting it nicely, compared to things she has said to you, and probably about you to others..and a leopard doesn't change his/her spots, and she knows the real you, she has seen both sides of you, and she seems to have brought out your bad side just as well, and if you ain't all about impressing her, she thinks a man's a jerk?! ..she don't care, and what y ou have here is a real snake in the grass, that talks out of both sides of her mouth,.She contradicts herself throughout this whole story, and puts the blame on you for not being a nice guy. She is a liar, she knew how you felt, and she led you on..simply put, if she went by first impressions, and breaks with you over first impression, and u dated in between then she completely made an a** out of herself by going out with you after what she said and felt about you to you and other ppl. My guess now you know your not the only one she is doing this too. If she cares so much about Mr. Nice guy she's seeing now, when she didn't like him either, and had been hanging out and seeing him the whole time she was seeing you..Now he's Mr. Nice guy and you are a jerk again..and only you know what she said about him and why she didn't like him..and I really think this woman has issues because she keeps going out with men she don't like..and it isn't logical, and if you don't think that way then it never will make sense..and this is why you keep yourself tore up about it..it's like beating a dead horse..and if all her relationships are like the ones she's having now, the men probably went through the same thing you are. and the other boy toy she has right now, will give you the perfect opportunity to hit the door running! lol and don't look back! She has issues. I only see your side, because that's what I'm reading, but enough of her way, because this shouldn't sway for you..you give her every excuse in the book, for treating you bad, and I don't understand that either, you went into this relationship with good intentions, and she took you for a roller coaster ride, and still is, is bringing more people along. Do what you want, if you think you can live with a liar, a cheat (guilty by ommission sir, she knew how you felt, and could saved u alot of grief and the chance to opt out of seeing her, by telling you she was seeing someone, and she didn't because she knew you wouldn't stick around, so she stuck her claws in you a little bit deeper to keep you), and will everytime you start to back off..End it, don't be a friend, she doesn't know what it means, and find a woman that loves ya better than this. If you are just lonely and bored, better that than a fool trying to make you look like one. This might make you mad, me saying this about her, when you care about her, but I am a woman, and even if I cared only a little about a man, I wouldn't have treated him, or this other guy the way she is now..You will get over her so fast it will make her head spin, and you will have the love of your life before she will. o.k.? peace