What does it mean if a guy asks are you a virgin?

Because a lot of guys would love to be the first one in. Of course then there are guys that don't want to be responsible for taking the girls virginity. Guys also don't like to think about the "other" guys that she might have been with.

To see if she is experienced and can give a good job and more pleasure, to avoid STIs and just because he's a pervert.

future purposes

Flirting or teasing

To see if he has to be more gentle when having sex the first time with her.