I have been with my boyfriend for 2 1/2 years we are deeply in love and I am v happy. I went drinking last night (I am 21 and not a mum so sorry if I am not allowed to post here) and I literally cannot remember anything after entering the club. I woke up this morning feeling badly hungover and went home and was content. My friend then texted me saying she saw me kissing someone else but she doesn't know what happened or who initiated it. Obviously I am massively shocked and devastated it is completely out of character and I would never cheat. Of course I do not expect sympathy and I cant blame the alcohol but when I am sober I am not even attracted to anyone else. I also wet myself in the night because I was so drunk. I told my boyfriend right away and rang him and he's been very chilled about it and said he knows the type of person I am and that I wouldn't have reciprocated it and he trusts me. Of course he has been extremely forgiving and I am greatful but I can't shake the guilt feeling. I really can't remember doing it and I am only relying on my friends word but I dont see what reason she would have to make it up. I have asked her to ring me so I can get more detail about it but she is ignoring me.
How do I get past this guilt? I've told my parents and my friends and have been very apologetic but what good does that do? It was my fault for drinking that much and being in that situation. I feel sick to my stomach and I feel like I don't deserve to be on the planet anymore to be honest. Now I am going to have a reputation as a cheat and I have hurt the one person who I adore and love the most. I can't see a way out.
Any advice welcome.