My fiance wants to pretend date the man friend

by R
(Houston)

My fiance has been asked by a good male friend of hers before we became engaged to pretend to be his girlfriend on a lunch date so that he can infuriate his ex-wife.

They - my fiance and the other man - have a plutonic relationship and have never been intimate. He knows that I do not like him, that I am easily provoked to jealousy, and has asked her for this favor anyway.

She wants to do this for him. She knows I don't like it. I think it is deceitful and low-brow on his part.

I also have a problem with him asking, and for her entertaining his suggestion. He has other girlfriends he can ask, even mentioned this, but he prefers my fiance because she is so gorgeous.

He has also indicated that he wouldn't ask her if he thought it would bother me (a lie, because he knows it bothers me.) Should I have a problem with this?

Additional note: several months ago i received a phone call from an old female acquaintance of mine who needed a date to a social function and wanted to know if I could take her. She did not know I had become engaged.

I asked my intended and she told me she would have a problem with it and I didn't go. What should I do?

Would love an objective opinion on this.

thanks,

R