How do i get over him?

My boyfriend and i were together for a while and i was really feeling him. He never showed me any PDA and that really irritated me, but he was a sweet guy. Some hard times came along and our break up ended with some harsh words and one broken heart(mine). Even tho we broke up i still want him and now he has a new girlfriend who gets under my skin. what do i do? How do i get over him?