The best thing for you to do is try your hardest to move on. My ex left me and I was devastated, but I found me another boyfriend and ignored every conversation that had something to do with my ex. For the first few months I was still in love with him, but after a while the feelings started slipping away and everything got better. It will get better you just have to give yourself more credit in life. Just remember, if they think they are too good for you in reality they aren't even good enough to chew the gum off the bottom of your shoe.
