I have to point out that this is only one side of the story, but WHAT THE HELL?
Ryan Ross, if this is true, you are AN IDIOT. Seriously. Also, remember that first album where you wrote all these songs about your girlfriend cheating on you? Looks kind of hypocritical now.
I know this probably happens a lot when people are famous and girls are throwing themselves at them, but that doesn't make it okay. What, you can only be monogamous if you don't actually get the chance to cheat? That makes a commitment pretty worthless. Also, it's called SELF CONTROL. Look into it.