Is he just using me?

OK..me and this boy have been knowing each other for 4 months …at first I thought we was going out so I started doing things with me him but one day he stopped calling me ..I was going crazy I use to check my cell phone every 2min to see if he called but no..he called me 4 days after and he asks me to give him head I started laughin in a sarcastically way and noticed he didnt get the joke so I told him no and he asked me WHAT ABOUT IF WE WERE GOING OUT WOULD YOU? when I heard those words ma heart broke into pieces but I ignored them…Now the confusing part is that his always calling me babe and he tells me he loved me well use to tell me because last night he said he LIKES me …but his so sweet with me and knows me so much I think more then me so it kinds of confuses me but he also gets jelous when his friends tells him I was with other guys he acts like we are going out but then he says we are not so its very hard …so someone please give me some advice on how to handle this I really really like him and I want to work this out but if his just using me then I rather leave him..so what you guys think?