Ho ho. Sexual, yes, overtones, no. Bring me a vampire/romance book made after, oh, 1999 that doesn't involve having sex with a vampire to gain his powers or whatever, and I'll say you're lying.
I know this because a friend of mines likes these books. Every time I see her, she's reading a different one. Who writes these things??
Oh, and werewolves rule. Don't diss werewolves.