Most Helpful Guy
People change, they get bored, they get annoyed or angry for no reason. Just move on.
Most Helpful Girl
I'm in the same situation, I've read that guys will break up with a girl and be completely happy with their decision, they'll block the girl so there's no chance of them being reminded of them, and then after a while they start to regret it and miss them. I've read it takes anywhere from 2 weeks to 3 months for the guy to feel regret for leaving the girl. Especially if you guys had a good relationship. You just have to pretend like you don't care, guys want what they can't have.