My wife and I are planning on meeting an attractive girl for lunch this weekend and having a threesome at our place after. I've convinced my wife of this to the point of her questioning whether or not she's bisexual. As alpha as it sounds to be able to dominate two women at once, deep down inside of me I know that this is nothing more than lust overcoming me. I could either have the threesome and potentially jeopardize the health of my marriage (we may hate it and fight, she may like it to the point of lusting after other women) or I could cancel the plans and continue building a wholesome life with my wife.
I don't have any feelings of guilt, I'm just not sure about giving in on feelings of lust and fantasy. I don't watch porn because I find it degenerative and not glorious - should I feel the same way about this?
All thoughts appreciated.