My husband and I were into the swinging lifestyle for a little less than a year. We had fun and it had no negative effects on our marriage- but we were partners in this decision. Looking back I now think this was part of a long manic episode for me- the high I got from drinking and partying with these people and the texting etc made me ultra "high" and revved up and then all of a sudden I was over the whole thing and couldn't imagine doing it again. On the other hand when hypomanic and/or drunk I have stepped out and some he wasn't mad about and others I never told him about. Not proud of those.