Oh, I am not saying you should stay in a relationship with him if he is being dishonest about his involvement with you. I am saying that I don't see it as your place to tell him what to say to his girlfriend. There is a difference between standing by your own personal boundaries of what you will or will not tolerate... and micromanaging someone else's life.
The world opens up... when you do.
Oh, oh, can't you see? Love is the drug for me. ~Bryan Ferry
"Love is that condition in which another person's happiness is essential to your own." ~Robert Heinlein