I just like threesome dating

My wife and I have been marring for three years, we love each other so much. But recently, I don't feel the passion and excitement about our bedroom life. One day, my wife asked me whether I love someone else. I know I have to change the situation. So, I said I want to try something different to spice things up. And she brought up to have a threesome dating. It is surprised that she would say that. And we try it for once and we both agree to keep three way regular.