Is it normal that i like to bite her?

Is it normal that i like biting my girlfriend's neck and wrists? its makes her horny and she squirms around slightly which turns me on. is that normal?? ive also given her a hickey on her wrist...so what do you think?

Girls, how many of you out there enjoy it when a guy does this?

Guys, how many of you out there also enjoy doing this to women?

thanks everyone! :D