should i ask her out via facebook??only way...?

[Demy]

I have known this girl for half a year now and i have liked her since day one but i only saw her for like 5 mins a week
I was always too shy to talk to her let alone ask her out
I m pretty sure she didnt know my name but i think she kindamaybe liked me.
I havn't seen her for 2 months now and i think its time to ask how she sees me.

So here's the deal:
I wanna ask her out tomorrow in the last 5 mins of 2013 via FACEBOOK!(and wish her happy new year)
I dont use fb i just have an acc with 0 friemds which i used to activate something.
I wanna ask her if she remembers metell her i m crazy about her and apologise for the lame way of asking her(i have been asked via whatsapp and msn so i know how stupid it is)
Tell her why i dont have a normal fb acc , wish her a happy ny, ask her out and give her my number.
Would this be an OK way of asking her? (suggestions??)
I see no other way and i really need to know if she likes me.

Thanks a lot,
Demy.