It's been maybe a little over a month since my ex and I broke up and the memories still haunt me. They hurt so much and I want to forget about her. How can I move on?

Im sorry you hurt so much dude but this might be though to hear but remeber she wont and im sure u will find some one better :)

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.