Those mixed signals are hard to interpret

Wow ... that's so hard to tell. BTW... sorry the answer is soo late... I was just looking through all of them and yours seemed interesting ;];]
Anyway, I think you should shrug off the nervousness and talk to him more. once you actually start talking, things will go well. Talk to him about common interests or school in general. Talk about homework or test/quiz/project. Maybe he has some cool ideas for you for an upcoming project. Just step up and don't show nervousness... because then he will get nervous and all will go wrong. So far, he might be liking you. And the love songs, I think are foolish because guys wouldn't really mean to sing for you unless they were super confident or just had a really good voice... but this doesn't mean that he doesn't like you. He just wants to spend some time around you! So step up, and get comfortable around him... and most of all... do not think about the other girls... and also a boy friend is always better than a boyfriend...;];];];];];];]!!!!

Good questions. That is hard to interpret. I think he does like you. It doesn't sound like you are shy around him if you can carry on a long conversation and endure terrible singing. You might worry a little about the other girls - sounds like that could be trouble. Hard to tell what's going on.