My Worst Mistake Or My Best Decision?

Everything happens for a reason. It's going to be tough, but I'm going to let life take its course... Last night I made an attempt to get a hold of Martha to let her know my position on everything... She in return sent me a picture of her and her new boyfriend kissing... If a girl ever reads this, which I highly doubt, beings only 1 guy reads this... I'm sure she feels that Martha had every right to send me that picture... It's what I deserve for not letting her go. Whether you agree or disagree with what she did, I feel it was ruthless. She in return felt it was rude. At least that what she texted me saying. Her boyfriend had "peer-pressured" her into doing it. She told him that she wanted to be friends with me, and he said it was alright even though he knew I would try to get her back. She needs permission to talk to people. Never... EVER in the 2 and a half years we were going out did I tell her who she should and shouldn't talk to... And that's what she wants? Anyways... I told her upfront that yes... I couldn't help but try to get her back, so I decided that we should never talk again. I told her I would want nothing more than for her to text me or call me but only if I was more or if she wanted me to be more than a friend. I told her I couldn't take back everything I gave her, cuz the best way for me to deal with this is to put her in the back of my mind... I won't lie, there will always be a part of me that hopes and prays she'll come back, but with how far she's gone to hurt me... Even if she regained feelings for me, I don't think she'd tell me... I told her all I wanted back was the phone and the key to my house. I told her to please not contact me, but she did asking me if she can keep the phone... that I can cancel the plan, but if she could keep the phone. I don't know what to do... She never liked that phone... It's basically broke, the only reason I think she wants it is for the memory card on the phone and all the pictures she probably took of her and him on it... I feel like saying screw it... keep the phone have fun... but I don't even want to think about it... I feel so sick to my stomach... Since Tuesday, I've probably had 3 mouth fulls of food... I'm not hungry, and when I force myself to get something in, my stomach turns... I'm hoping all this will pass... All I have is my faith and my sliver of optimism that she will some back, and maybe that's what's doing me in...