once you invite others into your bedroom there are usually big problems that follow. very few couples can endure this. can you honestly say that you would be ok with your wife having sex with someone else-and enjoying it?like sex with you has become so boring that she needed it elsewhere. i can tell you that women are very jealous creatures.
when the jealousy starts you will wish you followed my advice, next there will be huge trust issues every time your spouse is late or talking to someone else.