Someone I have feelings for says he is interested in someone else

I was talking to a guy for four months that I matched with and caught feelings for and he always seemed interested but now he texted me saying he has feelings for another girl. I don’t know why but even though we never went out or were official I feel completely shattered and broken. I’ve lost hope for finding someone who cares because every guy I’ve ever liked just wanted to use me. I don’t feel like I can trust anyone with my feelings anymore. I don’t know what to do I’ve never had a relationship before and I don’t think I’ve ever been so depressed or cried so much. I’m just an emotional wreck and I can’t control it. I feel like there’s something wrong with me and I shouldn’t feel this way because we were never dating. I don’t know what steps I should take to move forward. I was shocked when he told me and now I feel like I don’t have any value and that the only people that care about me truly is my family. I have a hard time accepting myself and I always thought I’m not good enough. I don’t see any reason why I should love myself if other people don’t love me. I can’t stop crying, and I can’t control myself. I can’t talk to anyone because all my friends say I’m naive and this is why I feel like this. What am I doing wrong? And how do I make the heartbreak go away? I’ve never felt more pain and I’m angry at myself for being the person I am, someone that isn’t good enough for any man.