Moving on is hard

In a couple weeks I’ll turn 19. It’s been 10 months since my first love wanted to break up like a week before our 3 year. He ended up treating me not the best but it’s hard to forget all the good times. After breaking up a lot of stuff went down, he hit up a girl I worked with, I found him on a hookup app, he hit up my friend and then to top it off a girl messaged me saying he raped her. Of course there’s more to the story but I really loved him and I thought he loved me and was a good guy. I don’t think im going to meet anyone good anymore. I’ve lost hope and he’s still on my mind sometimes. I wonder why I wasn’t enough.