"Dating"

I've been "dating" this boy for about 6 months and we've recently started to have sex. Although I had feelings for him from the beginning, their are starting to become STRONG feelings. When we first start talking I was telling him how I wasn't ready to be in a relationship BUTTTTT now I'm ready to move on and I feel like his has gotten comfortable with just "dating". I've expressed my feelings time to time and I honestly don't know how he feels about me because he beats around the bush saying this like "you know I f*ck with you" and "yeah I understand". But if I mess around with another dude he will go crazy on me. What should I do? I have mixed emotions and honestly just wanna be in a committed stable relationship now or I'm going to have move on I guesssss... HELP!