What guys think of girls biting lips?

There's two types, one is where the person bites there lips when they're concentrating on something and the other is intentionally flirting. Some people think it's sexy.

Hawt

I think it's hot, but it could mean she's nervous or she likes you.

They love it

Let me know what it means please.

It says she is nervous or she is pretending to be interested

Some guys find it hot if she does it right. Not making overly obvious.

It tells me that she's probably nervous or wants to kiss me. But then again, I'm terrible at reading nonverbal cues.