Don't do this. She is his number 1 and this is how he treats her. No respect for the woman he "loves". It's "romantic" to you because he's giving you all this attention, you feel like he's risking everything to be around you. But it's devastating to her. You would be heartbroken to be on the other side of it. I know it's hard to care because you're getting what you want, but come on. You COULD give him an ultimatum, but I promise you, even if he does pick you (which he probably won't) it won't end up pretty for you.