Help me . ASAP

Okay don't judge *im 17* ... I was in a faithful relationship with this dude for like a year & then he went to college & we broke up ... we both agree to not have sex because we still love each other ... I had sex with this dude I was talking to before my current ex , like 4 times.. I had really liked him but he didn't like me so I moved on. The feelings never died but I put them away. But my ex been texting other females & idk what else he could be doing ... but the dude I had sex with ... just stopped talking to me ... out of nowhere . & idk if I should go back to my ex because when he find out its going to be bad because did I cheat ? I'm so confused I miss my ex but i strongly like this dude ... but he doesn't like me . 🤦🏾‍♀️ my friends/fam say I made myself to available... did I ?