Most Helpful Girl
I think that's sweet and yes you should definitely write something... let her know you want to talk to her. Hopefully she will be open to going back to the way things used to be between you. You have to sadly be sort of prepared for her to not come back to you though, and if that is the case you could risk getting hurt even further than you are now. But if you let her know your reasons for breaking up, let her know how much you think it was a mistake... you have a good chance of healing what's broken between you two. Good luck to you!
Most Helpful Guy
Jesus fucking christ dude... There are millions of other fish in the sea, get on with your life already... She's not the only one for you... Furthermore, if she fucked some other dude the day after you broke up with her, what makes you think she was that into you to begin with... Is she feeling the same heartache as you are from the loss of you? I think not... Move along now.