Confused ?!?

Is it possible to fall in love with someone?
I think, I don't know, maybe it's just my instinct to protect coming out
I don't know, I'm Confused!
And the rest at work don't help, always making remarks about the 2 of us, I don't think she's notice yet...
I was thinking of writing a letter, but I don't wanna ruin the friendship we have right now !!!