I have noticed it, guys have done it to me. It doesnt bother me at all. I think its cute, because I don't understand why they would be nervous i dont care. haha but yeah just be calm dont worry about it. The girl is probably a little nervous too
Don't worry about it-I'm in high school and I'm the exact same way, and I even lose words. Like this girl I really like (I think she likes me), she asks me all these questions and I just say a few things and then I'm like "I dunno" and I feel like a complete goof. But usually if I can calm myself down-then I'm ok.