Dude!!!! Oh man Oh man! This hits a nerve from the school of hard knocks with me...
I was in the same exact situation as you. The chick was fine...I loved her to pieces. Same deal, she had just broke up with her ex when she met me. It all went great for , yep about 2 months. In fact her ex called a few times threatening me etc. At her house! I got pizzed, knew he was doing some illegal shyt that only she had the proof of, and leaned HARD on her to get him put in the slammer. Figured thats what he gets for pizzing with me! Well, She tried, but to no avail.( go figure) You'd think after all of this she'd want to stay clear of him. he was a possessive stalker, and a weirdo for sure. But she had been with him before.
Then she started talking more about him. Told me she would "rather be friends with him, then enemys, what if they met at the store etc. wanted it to all be good". GEEEZ I thought. I figured, it would pass, just chill. Well, One day, I call and ask her to come on out to my place. She says she would but ( you guessed it!) the ex was there and they were talking.
After that she unblocked him from her phone, and he started coming over once or twice a week. After not long, maybe a couple weeks she broke up with me.
She didn't go back to him, but she did fvck him several times. I found out (with proof) thru a mutual friend, that she confided in about it, that I know I can believe. Believe it or not, she LJBF'd me, and I said duh..ok sure! I figured whatever, afterall she was pretty hot. Not a do or die thing to me anyways!
It gets better. About 2 months after her breakup with me she met another guy. To this day, her and I are still "friends" just for the simple sake that, I do like her, and she doesn't interfere with anything else I try to do. Thats cool, I am over her and I can be her friend. Remember the guy she had broke up with before meeting me? Well, now I am that guy in essence. She is seeing this other dude, her "new boyfriend" but comes here a bare minimum of 3 times a week. She kisses me, she flashed her tits at me today. She talks all erotic and shyt. See, since we have "been there already" she is comfortable with me. Yes, it won't be very long at all and she will "go there again" if I push it whatsoever.
What about the guy she is seeing? Well, he will be like I was. Confused, pizzed off, insecure, and totally AFC about the whole relationship. I sort of have to feel for him! It shows me how pitiful I was once. Yet, this is a diffrent deal too. I gave her my blessing, met the guy once shook his hand... told her I want her to be happy with him. I honestly doubt she will. He has more issues than she does.but they both have issues, he is just worse off than her) What I am doing diffrent than the ex, that plagued my azz..is that I am totally all for it..no threats, happy to meet her new guy, wish her happiness. Its really a friendship. I ain't after her. Yes she is hot, but I see the pattern. Know what the terrible thing is? If I wanted her, I could have her, it wouldn't take much. There ain't nothing her new romeo could do about it either. Because I am so "pro" "you guys just have a good relationship, I'll be over here doing my own thing" She actually is getting turned on, and wants me. What chick is gonna see you 3 times a week, flash you tittys. kiss you all the time, and call you almost every day if they ain't interested? True she is with him now, but the only way he will ever KEEP her is if he says, look bytch...game over. I don't trust you, I don't go for that shyt hanging out with the ex (me). He won't cuz he is so totally AFC. I don't want her, except maybe as a quick lay, a fvck buddy. I would never trust her azz. And you shouldn't trust the girl you are with either. Or would you really like to learn the hard way...your choice. I think your best option if you want to salvage things, is to get used to the idea of putting your foot down. You can, do this many ways, but you can't be like her current bf is being with me..cuz he is wearing them rosecolred glasses, and THAT is what is allowing her to pull the shyt with me! I only wish I knew then what I know now! Good luck to ya bro!!