What the heck does it mean?

So I've been out with this guy about four times now. First and second dates left me a little unsure but by the third I was really starting to like him. He seemed smitten from the first date. The first few weeks we communicated frequently via txt and the occasional phone call. After date three (where he told me he didn't want to have to wait so long between dates) he started sending fewer txts. Date number four was great. Or so I thought. He acted as if he was completely into me...had a hard time keeping his hands to himself in fact. After date number four it's as if he simply fell off the face of the earth. I didn't hear from him for several days. Sent a txt just to see how he was doing and got a "hey I'll call when I get home" but never got a call. Sent another txt towards the end of the week saying I hoped we would be able to get together and I got back "have family in town till the end of the week" Here it is Monday and no word. Im pretty confused at this point. No call or contact after date one or two I would just assume we didn't gel, but i would think after a fourth date there would be at least some kind of "sorry but Im just not that into you" kind of message. Do I give him the benefit of the doubt or assume he was just too chicken to let me know he wasn't interested?

Date number four was great. Or so I thought. He acted as if he was completely into me...had a hard time keeping his hands to himself in fact.

Sorry I have to disagree with Laced (as well as those in the other thread)....not all men decide to not see a woman because she doesn't put out. There are tons of other reasons.

I'd say he might've been going out on dates with other women also and decided that for some reasons somebody else has better potential or a better fit for him.

Sent another txt towards the end of the week saying I hoped we would be able to get together and I got back "have family in town till the end of the week" Here it is Monday and no word. Im pretty confused at this point. No call or contact after date one or two I would just assume we didn't gel, but i would think after a fourth date there would be at least some kind of "sorry but Im just not that into you" kind of message. Do I give him the benefit of the doubt or assume he was just too chicken to let me know he wasn't interested?

I just don't want to assume anything as I know there is a ton going on in his life (grandbaby on the way, family member going to Iraq, and single dad with full custody)