case of the flirty boyfriend is a tough one to solve. See, it may be that he really doesn't mean anything by it. He flirts because he has a girlfriend already and he thinks it's safe. You say you're used to it and don't really mind except when it comes to Jenny. Unfortunately, you can't really get away with drawing the line like that. That's like trying to housebreak a puppy by teaching it that it can go in this house but not in that house. You'll only confuse him. You need to have a real heart to heart with your guy. Tell him that his flirting is disrespectful. If he wants to keep you as a girlfriend, he's got to respect you AND stop treating every other female like she's a toy. Let him know that if he wants to act like a single guy, you'll be more than happy to make that possible!