I’m sorry this has happened to you and that you’re so hurt. 🙁
Unfortunately, I’m not the least bit surprised by her reaction — she needs your to help her get her son and to help pay the legal bills and to pay half the rent (among other things). She’s been sleeping with your friend behind your back (don’t kid yourself into thinking they were “just playing” — that’s total BS and you know it!) and she’s been (and still is) lying to your face.
Wake up! 😮
You have seen all of the evidence with your own eyes. You know what they’ve been doing. Your instincts told you and then your eyes saw the evidence. Words can lie, actions never do. Base your decisions on what you have seen and don’t let her words cloud your judgement. You know the truth. If you decide to stay with her after discovering all of this, ignoring what you found — you are doing so with your eyes wide open. 😯
I hope you find the strength to extricate yourself from this woman while you still can. 🙂 If you don’t, please don’t be surprised when she winds up pregnant so that she can lock in child support payments from you to pay her rent… and then you find out she never stopped cheating. Sorry, but that’s the kind of woman you are dealing with. She’s a user. She’s been using you, and she will continue to use you as long as you let her. 😐
Good luck!