Well it really depends on how you look at it my friend. My wife is amazed that I am not jealous of the fact that she spends time with two other lovers on occasion. I explained that as long as she is emotionally invested in me, I have no reason to worry as long as she is safe and happy. If doing this is something that adds variety and spice to your relationship, I wouldn't worry. However, if you start having feelings of insecurity, or if you start to feel like this is adversely affecting your relationship, you need to be honest with her and let her know.