yes - of course
if you like a girl and there's a chance she might like you back - always ask her out
in fact, always assume
she likes you too - if you like her via the chemistry, then she probably would unless you're ugly
because she's not going to ask *you* out - she's the woman and you're the man
and if she says no - what are the consequences? you stop talking to her? who cares? why would you want to just be friends with a girl? what's the point? you'll always want her in the other way, so what the consequence is meaningless if she does say no.
but then again, my problem with girls is that I can never seem to get them alone, so I'm always talking to them in front of other people. the last time I asked a girl out I was alone in her room, thinking "why else would this girl have invited me over ffs" and when I did she was like "omg SS whaaat, but I thought we were just friends" - stupid girl. ffs. very absent minded. I mean, I had already had sex with her! (over a year before this point - but still!). but usually it's because I can't get the respective girl alone - the time before this I even asked her out over facebook because I was too busy to meet her and she was too busy to meet me (exams). oh yeah, and she also said no - she was (and still is) seeing somebody - this probably makes me sound very undesirable but nah I'm okay, just bad circumstances
but the point is this - always give into your masculine instincts - if that means be a thirsty horny old ******* then **** it, why not.