How to feel special and valued again after being used?

I'm 16 and I lost my virginity to a guy 8 years older than me who convinced me that he loved me.. We dated for like 4 months and then havent talked in 2 weeks cuz I guess he's done with me since I won't have a 3some with him. I trusted him and gave myself to him completely and the fact that he could just totally drop me and detach himself hurts so much. He was my first bf and I just can't stop crying and feeling worthless and abandoned. How can I feel better and get over him? Please be kind, I've heard enough harsh advice.