What Should I Do?

So I've been talking to this guy every day if not every other day since the beginning of February.. Normally, I wouldn't think this would be a big deal, but everyone knows he doesn't really put himself out there much (he's a strong introvert, lol) and talking to me, let alone talking to me for this long is kinda out of character. Except he's so hard for me to read and I can't tell if he's into me or not. I don't even know if I should make the first move.. what should I do?