Maybe it will be easier for you to talk about if you all three sit down together and let this woman initiate the conversation, so you don't feel the pressure of bringing it up, but will be able to add what you want to say.
Hot chick in the city.
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