I feel bad for you I know that does not make it any better but I do.

You sound like such a nice person and people like him know it, once I saw a girl for ages who I loved worshipped the ground she walked on and she knew it, she split up with her boyfriend (so she told me) and I was head over heels, I introduced her to my friend my parents and all the time this guy was seeing her, god I feel bad about it now...I don't hate her I pity her.

Now I have love shes perfect she makes me laugh, shes beautiful and I am married to her.

I am not saying that last bit to make you feel worst just to let you know I've felt pain and you must be now but leave it well alone, come throught it you sound so caring and considerate you're little girl does not need someone like that in her life, I hope and trust you will find love and it will seek you out love does it finds the kind but it lets them know what the pain of hurting someone is like you will never wanted to have made someone feel how you feel now, don't squash it remember it and when you find your love it will seem all the better.

Love is on its way I know

take care I am sorry if this message does not help but It was honestly what I believe