Thanks for the reply, Its not so much that Im afraid of getting rejected, I mean I dont have nothing to lose. I just dont know what to say to them, without using a line you know.
Can you help me out someone?

I just wanna make a good impression you know.

Sometimes I get tongue tied, I dont really stutter or mumble but it has happened to me before, when Im presented with a situation that I feel awkward in.

Probably happened to everybody.

Thanks again.