I'm really sick of immature boys....

Hey guys! I'm 14, and I wanted to know if anyone else has gone through what I recently have. My ex and I were dating for over two years. I've always been VERY nervous about even kissing someone, so my boyfriend and I never even kissed until about 4 months before I broke up with him. The reason for our breakup? When we kissed, he tried to put his hands down my pants. I stopped him, and just kind of shook it off. But after that, he started getting more sexual I was almost scared to be with him alone. I wanted to breakup with him, but I seriously didn't know how. I did eventually.... but the after part was the part I never thought I'd have to worry about. He kept trying to call me, but I ignored him. He eventually got his friends to call and text me. His friends started questioning me, and called me a slut because I started dating someone about a week and a half after I broke up with him. Why did I type this? I'm just fed up with teenage boys and them trying to make you feel bad for breaking up with them even IF it's their fault!