Should I Just Move On?

Hello Everyone,

I was hoping to get some advice about a situation I am in. I apologize for the length .

I met an older guy and we began talking everyday. He is several years older than me (I am 20). I am thinking, though, that this guy is not just talking with me, but most likely many other women. He jokes about 'never being lonely' because there is 'always a woman around' and laughed about having female articles of clothing that other women left behind (!), but then he says 'YOU KNOW I AM JUST KIDDING, GOSH.' Also, when asked him if he would like to make plans one night, he said he was going to bed early, but then was online until midnight or later.

A little while after we began talking on the phone the first time, he asked me to hold on a minute as he had another call. He was gone for about 5 minutes. Now, granted I wasn't about to be nosey and ask who it was, it could have been a friend/family member, but probably not. He has a cellular phone, and not a home phone. He says a home phone is 'too much of a hassle.' HMM. I have not given him my home number however.

Also, he IMed me and asked me a really off-the-wall question the other day. I will try and put this as gently as possible, but he asked me how big my breasts were. I was stunned. Then he told me not to be so sensitive and said "He loves messing around with me" (in the joking manner). He is always making sexual comments and while they were funny at first, it seems as though he does not want to talk about anything else (i.e. he doesn't seem to care when I am telling him about my interests, goals, etc.). And, he doesn't even respond to my IMs some times.

We have tried to make plans to hang out, but both of us are busy most of the time. He will ask me, 'when can I see you?' which is okay, but other times he will ask, "Do you feel like having some FUN tonight?"

What should I do? Should I flat out ask him if he is talking with other women? I can not believe that jealousy is rearing its ugly head, but it is . I do not want to and will not have a fling with him, period.