I've had a thing with the same guy off and on for about 2 years. Before anything happened between us we're were best friends and he decided it would... Show More
Most Helpful Guy
You want to sleep with him? Do it. You don't seem that concerned about the girlfriend if you're still thinking about it.
Or if you're not going to sleep with him, have some fun and ask him, "So how is ____?" In fact, it might be fun to do that either way :)
Guy viewpoint: Get over the "valuing your friendship" thing. That's not how he thinks of you. He thinks you're hot, and he wants to sleep with you. Simple as that. In fact, I'd be surprised if you're the first girl he's tried to or successfully slept with since he started dating her.