How to prevent falling in love with a co-worker?

Answer 1

If you're at risk for that, see if you can get transferred to another work group or department and minimize your contact.

It's really best not to mix work with social life that way. When the relationship is going on, it makes everyone uncomfortable (they'll know), and when it's over, you'll suffer in front of everyone you know, and you'll be stuck interacting anyway. Spare yourself and others a lot of misery and just avoid the whole thing.

But you already know this, or you wouldn't have asked the question.