Welcome to our forum.
In our monogamy-conditioned world, it's not easy for someone to realize that their spouse has another love interest. So you are lucky to have a spouse who is so supportive.
If you continue to read (and post) on our website, it will help ease the feelings that this is some kind of alien thing. I hope we are able to help in some small way.
Love means never having to say, "Put down that meat cleaver!"