<human>: Can you condense the text into a few key points?

So this guy "friend" and I have had a thing (crush) for each other for some time. A couple months ago we got drunk and ended up hooking up. Since then, we have hooked up a few times. I'm not expecting anything serious to come of this but I am a little confused as to his behavior and actions.

Prior to the hookup, we would talk and text fairly often. We get along very well and were pretty friendly.  Now, it seems as though he is actively ignoring my texts. He delays responses and sends very short messages. No real conversations. 

Now, I'm quite aware many men are just after sex, and if that were the case I really wouldn't mind but some of his other behavior throws me off. He's introduced me to all of his brothers and his mom. He's introduced me to his best female and male friends. 

When we are together he acts like his normal self, but then I'll hardly hear from him during the week. He also told me in person that he's into me and that the first time he spoke to me he was so nervous he was shaking.

So my question is, is this guy just a jerk that got what he wanted or is he playing games with me?
I'm very easy going - I'd be open for just a casual relationship, something more or simply a friendship. I'm just really getting mixed messages here and I don't know what to think.
<bot>: Hooked up with a "friend" a few times and he's giving me mixed signals now. Not sure whether to try to maintain the relationship/friendship or abandon it.