I need advice. i was seeing some guy for 3 months. more like beasties.ive known him for 5 yrs but just 3 month?

ago we started talking hanging out and slept together 2 tmes..he use to tell me he cared for me..but the last time we went out we went for walk on beach n dinner . its been 3 weeks i havent seen him. he doesnt respond to my texs or anything, we'll be on facebk and he dont aim me or anything. i am so crushed. dont no what to think...any advice