Most Helpful Girl
Why should you feel guilty? He treated you badly when you were together so you can move on whenever the hell you want to. It's not his call. You did nothing wrong here. He's a asshole and he proved that to you when he went on his little drama queen rant after he found out the news. He literally just showed his true colors all along. You have every right to enter a new relationship when you feel ready. There's no rule that says you must wait x amount of weeks or months. You are free to do whatever you want and got that right when you broke up with him.