"I heard you are out there in the dating world now. I'm glad for you, you look great and if that makes you happy then I am all for it." "Maybe we can double date sometime."
I love this!
Just think a little about the effect these words would have on her. It would take every ounce of strength or resolve or whatever for you to say them. And, of course, you wouldn't really have to mean it 100%. It would be so difficult for you to do, I get it.
But--
Just imagine the look on her face and what will be going through her mind. Especially the double date part. After you tell her this and walk away with a smile on your face and a bounce in your step, the next person to see her may have to help her pick her chin up off of the ground.