Relax, guy. Go out with them, have fun. They're girls. We're not as horrible or evil as people seem to think, in fact a lot of us are very nice and aren't going to laugh in your face the minute we get the chance as you (guys in general) seem to think. They are trying to make you feel comfortable around them by pointing out that they want you to talk more and come out of your shell. They're not going to judge you harshly.
But really, all 3 of you? that's weird
& hey, I'm 17 too. Just wanted to point that out because you're the first 17 year old I've seen on here