How do you not become attached to someone if you are just their booty call?

The guy I have been seeing since sept. does not call me on a regular basis. I told him how I felt and he avoided it. I last saw him Feb.13. He has not called or emailed me, but I know if he calls I will tell him it is ok to come over. How do I say no and get over it? Any suggestions on how to get him or just avoid him?