So during the school year i started talking to this guy., and he seemed so sweet we used to talk everyday. I always had fun when I was around him. So on my 17th birthday i decided to hangout with him. We ended up having sex, and that was my first time. He was so caring the whole time, and nothing was awkward afterwards(we just laughed and talked). So a couple of days passed by and i didnt hear from him. So i decided to contact him. We were talking and everything was cool. Except now we only tlked every couple of days. Then that quickly changed to once a week, and it seemed like he never wanted to hang out anymore. well now i havent heard from him in like 10 days, i tried contacting him, but he didnt reply. I'm so confused..and dont know what to do. I have a bad feeling that he used me for sex, but why waste time talking to me afterwards?? idk..someone help!!!