Push her away

You push her away fairly forcefully, causing her to have to catch herself with her hands to keep from tipping over. "Are you crazy!?" you ask. "You only just met me!"

"Ooh," Belinda says, "you're a feisty one, aren't you? I'm always first to check out the new boys. I can tell a lot of the girls are going to like you. I didn't think so at first because, frankly, you're kind of a pretty boy."

"Hey, a lot of girls like that, I'll have you know. Besides, I have a girlfriend already," you say.

Belinda makes a face. "Don't worry about her. What happens in Rosestead stays in Rosestead. And it's not like I want to be your girlfriend, anyway. I just want to see your cock. I'll tell you what: if you take it out, I'll suck it for you. Best offer you'll get all day."