A youtube video made me bisexual

I'm 18, have a girlfriend and I'm at university and I've never had any thoughts about other men, but I was watching a youtube video of a guy and I found him insanely attractive. I've never fancied any other men, so why is this happening now?

The youtube video 00:34 is what aroused me.

http://www.youtube.com/watch?v=2qO8HuDk_HQ

Yeah that really isn't bisexual. Sounds more like a man crush, some men are more attractive than others whether you're straight or not.

So it has to be men plural in order to be bi sexual?

it didn't "make you bisexual"... you are just attracted to this guy it does not mean you are now suddenly attracted to guys, it does not mean you will ever find another guy again that you find attractive... though maybe you will. don't try and label yourself. that's the hardest thing. i call myself straight but i am attracted to some women... (i am powerless against kate upton doing sexy things... she's not even that hot apart from the boobs but she oozes sex appeal)...

and... god... he is pretty sexy...

His look is not attractive. But what makes him attractive is his way to present, the peace to speak, etc. He gives me a feeling of mature and reliable.

Btw, I found his accent not as attractive as his look..

I'm 18, have a girlfriend and I'm at university and I've never had any thoughts about other men, but I was watching a youtube video of a guy and I found him insanely attractive. I've never fancied any other men, so why is this happening now?

The youtube video 00:34 is what aroused me.

http://www.youtube.com/watch?v=2qO8HuDk_HQ

Well he is attractive to many.

No, you're not bi, just confused.

Mancrush? Yeah I can relate. But bisexual no.

Oh dear God, he is sexy so I don't blame you but THIS IS NOT BISEXUAL! As the people above me said, this is more like a man crush. You should really wait for more concrete evidence before worrying and tagging yourself to be bisexual.