Put your clothes on! umm, WAIT!

I don't think that most guys do that.
Maybe he's a little embarrassed. Or maybe he wants to get away soon. Perhaps you could ask him, maybe you can put his mind at ease.

That is a really good question. I don't get "dressed" but I do just thro my boxers back on and lay next to my girlfriend. I do it unconsciously maybe because I think that my "body" is noting to marvel at in comparison with my gorgeous gf's but I'm not really sure why I do. There have been times that we have just fallen asleep in each other arms after sex but most of the time we just lay there for a bit catch out breath and then thro our pj's on. Then we will cuddle and just talk.

He's not comfortable with his body, and he's no longer thinking about sex after he finishes.

After sex lol I hate clothes I don't put it on after sex I lie there with her. I'm more into romance than her, lol but she likes to put her head on my chest and listen to my heat beat and we talk about some stuff and then we accidentally fall asleep well she does then I do :P

There are a couple of reasons why your boyfriend could be behaving like this.

1. He is insecure about his body and feels like you are out of his league, so he must cover him self straight away.

2. He might not be... how do I put this diplomatically... not straight, and is ashamed after having sex with you.

Either way, it does not sound like this is the right guy for you.

More like, they're used to wearing a shirt to sleep. It makes them comfortable sleeping with shirt on.

Unlike women, we don't have that "love drug" coursing through our veins that makes you woman feel all "warm and fuzzy" and want to cuddle. We generally feel cold, tired, and a little bit in a need of a shower after sex (some say spent). It's a hormonal difference. Most guys eventually learn that you girls like it though, so many are willing to accommodate your wishes if you make us breakfast or do something that will give us that "warm and fuzzy" feeling now an again too.

This guy sounds shady to me because usually, they love to just lay there next to you...I mean that's assuming that you had sex at night and aren't giong anywhere. lol...but yeah normally they like the feeling of holding you close. I'd look into that.

Sometimes guys just don't like the fact that they are getting looked at...trust me I know...do you do it with the lights out? That could be a sign...Why don't you ask him? I mean tell him that you want him to lay down with you after words...Good luck sweetie, trust me this could work, and he might start doing it...I know mine doesn't do it but we never really have that much time afterwards...GOOD LUCK!!!!