What am I supposed to do now?...girls guys..?

Well i'm currently seeing someone, guess you could call it girlfriend, that's what it is officially but I totally don't feel like she is. Anyway, I've been thinking about it for a while and I wanted to break up so I decided to do it tomorrow, but then I realised, that I can't break up with Angela tomorrow, cos it's bloody valentines day, and on top of that, I'm in love with another girl, with who I'll miss this valentine . But the main thing is wtf should I do tomorrow, on valentines day when I want to break up with her.. I doubt she'd prepared anything though, there's just nothin happenin with us, which is why I want to break up.