Hi everybody, this will be my first post here, but I have been reading around for a while.

Well, I have had a crush on a lovely girl for a while. Yesterday a me and a group of friends went to see a movie. The group included my crush another guy friend and a lady friend (we'll nickname her Renee). We seen the movie and had a great time, I dropped all my friends off and went home.
I finally decided to ask out my crush out later that night, so I called her up. She said she really likes me too, but we have a problem with our friend Renee. Renee has liked me for a while now, I now it, a lot of people know it. She is a great friend to me and my crush, but I have had no interest in dating her. We hang out all the time though. So by me going out with my crush it would possibly ruin both of our friendship especially my crush's.
So before me and my crush go on a date we need to make sure Renee would be ok with it. So I'm going to talk to her, but none of us have any idea what to say. So I would love some advise.

Thanks much!