Am I sending the wrong signals?

Anonymous
I really like him, but sometimes I think I UNINTENTIONALLY give him the wrong idea that I'm not into him or something.

A few examples:

- He called me. I didn't hear my phone, and didn't get around to calling him until a few hours later... he didn't answer. So I didn't call again.

- We always hug each other bye, but a week ago we were with our friends playing touch football and when we got in our cars to leave, I didn't hug him goodbye (I was all sweaty and didn't want to)

- Next weekend, all of our friends have a house rented on the coast... obviously, since we have mutual friends, he should know that I was invited awhile back... but he texted me last night saying "So we're going to the beach house next weekend." and I didn't respond. I ended up seeing him after that text last night, he showed up at the place I happened to be hanging out at. It was awkward, because I didn't text him back and I felt bad.

- When he left, he pounded fists with the guys & I was laying down on the couch and he tried to pound fists with me instead of hugging me like he ALWAYS does. We always hug goodbye, so I just wrapped my arm halfway around him and he hugged me back.

- I used to text him more often... at least every weekend. But I haven't been texting lately because I felt like I was bugging him too much.

I'm thinking that I may have accidentally given him the impression that I don't like him... he's really shy and he's never had a girlfriend so I'm guessing his confidence isn't necessarily at it's peak.

What should I do? Would you take my actions as signs of not being interested?
Am I sending the wrong signals?
3 Opinion