Pisces man is ignoring me.?

Today I went out w/ a pisces man and I've known him since Middle School. He took me out to the beach then when we got to the car he unexpectedly asked me out and asked to kiss me and I said yes. Then went to the movies and went to the alley near my house and made out the whole time. Then I got home and went on facebook putting In a relationship and wrote in my status that I loved him. Then found out he erased me on his friends list and ignoring my calls. He told me he had a crush on me since middle school but was to shy to ask me out because I was always w/ my friends. I want to know what I did wrong. I'm a libra by the way.