First foremost women and their drama! It's never ending story. It's not your fault (whatever you name is women, coz i dont wanna scroll up ! too lazy). Take it this way, men are wired differently then women, their circuits and the codes implemented in their brain or whereever you may, are different. By the way you talk, joke around and share feeling so vividly would make that guy or anyguy feel like, "oh does she like me?" or some other college kids syndrome. Its natural when men are at that age. For women its not the saame, you have to do more and more and more and more and more (specially for south east asian women) then what you did above to get that "do you like me?" feelings. This might seem funny to you as to how that GUYA reacted. But this gives him an indication that yeah you are intrested and you are frank to him. Whereas in your case as a women, you think you are just being cool and talking to each other and this means just for fun, but guys dont think that way.

As someone above mentioned the guy might be unexperienced, well I partially agree with your assesment here. Yeah he could be unexperienced but hey we all are big boys with small heart anyway! how long does it take for a cheese to melt when you place em in front on the bright tourching sunlight? so on a even base.

Final resolution: Listen women or lady or girl or what have you! The best thing to do is, not to be a bithc and ask for explanation anyone other then that GUY A. I am wondering why are you denouncing about GUY A here in public and asking "are all men like that?"  Go to him and ask him straight forward, how he feels about you? and all that gay stuff. And explain him that how you feel about him. Make things clear instead of goofing off here, since you done enough of goofing with your girlfriends and they are boored to answer this question of yours. Anyway i think i'm putting too much light on this issue or drama of yours.

Good luck

YekloYatri