So me and my long-term girlfriend have been having a hard time lately and I have just went through a rough family situation that has me in a bad way.. to make things worse she has been unrelentingly nasty and refuses to understand my feelings and just yells at me and tells me to stop being so negative. She doesn't get that I have been upset and depressed.. Well there is a girl I talk to every now and then on facebook. We always help each other out and cheer each other up talking about just about anything. Well two days ago after a bad fight I start talking to this girl and we talk for hours bout relationships and how we feel and both came to the conclusion that we have been trying too hard for people that just haven't respecting us lately and it sucks.. We told each other we'd be here for each other anytime.. Well yesterday morning rolls around and me and girlfriend get into yet another fight.. Not feeling like being home and upset I ask this other girl if she'd like to just hang out and she loved the idea. So I turn my phone off to get rid of the stress and we just go down to the walkway by the river and hang out and smoke a little bit and talk. After a while we get on the subject of my girlfriend and I explain my frustrations. She just gives me a big hug and tells me she wants to me to come over for dinner.. I kinda found this to be fishy but I just told myself otherwise SO.. We chill at her apartment, talk some more, she made the chicken she had prepared earlier and we ate and just had a relaxed night watching whatever goofy tv shows happened to be. She started to move closer and closer to me till she was resting against me and we were pretty much cuddling which I felt uneasy about but I let it happen anyway. Next thing I know she is grabbing my dick through my pants and kissing my neck and idk what the hell to do...... I feel horrible and I know it is wrong but she ended up giving me head right there and we fell asleep together. Next morning comes around and she's acting as if it never happened and she's being all sweet and makes me breakfast. We talk and but never really even hint at what had happened the night before. As she's getting ready to leave for work I tell her I ought to walk myself home and as I go to step out the door she pulls me back tongue fucks the hell out of my mouth and then says goodbye... Now almost 20 hours later I am still awake and I feel like absolute shit. I do not have a damn clue what to do. I honestly kinda like this girl.. But I love my girlfriend I really do, I know everyone says that after they cheat but I feel so wrong, like sick to my stomach. I cannot stop thinking about what has happened and idk what to do with myself... I am so ashamed