I fought with this before we went down this road. Looking back im very glad we did as it has been a great overall experience. It came down to how confident you are with your relationship with your wife. If you are like me and are very confident then you should talk to her and get your fears out in the open with her so she knows what lines not to cross. If you are not confident in your relationship then you are correct in not going down that road, but also must ask yourself why arent you? This is your wife we are talking about here and you should be confident enough in your marrage to be able to do this. If you end up pursuing this, make sure you put EVERYTHING up front with her, all your expectations, fears, doubts and anything else on the table and she should as well. Set rules and boundries and stick to them at all costs. This will strengthen the bond between you. And after you meet with someone, make sure you talk about what you liked, didnt like, was turned on by, would change...ect. Just be honest about it with each other. Its a great time if your on the same page!!