break up relief

I had broken up with my ex bf about 3 weeks ago and it has been the most relieving and stressful 3 weeks of my life. I felt free and just happier. Me and him do try to work things out but almost every convo. he annoys me and I tune him out when he speaks and I tell him to just leave me alone for a while. He still wants a second chance but I told him no, countless times, and he's being a baby. He keeps pushing my buttons and my patience and it's annoying. he says he misses me but we broke up because he was fucking up and I've had it. I've had a slight liking to my friend for a while now. I'm youmg and I'm free to like and be with whoever i want. And I'm honestly happy af.