My wife has had girlfriends in the past..Since we have been married, she has not fed these urges...?

NOW the time has come where she is an insatiable animal in the sack...Hell bent on making me spew forth baby gravy at an alarming level..and as a direct result of this abundance of sexual appetite, she has requested we get in contact and have some fun with her old girlfriend. I am a quite easy-going guy and honestly, thinking with my penis, believe this to be a wonderful idea, as I am fully capable of seperating sex and feelings...Thoughts?