This is research that people do not want to hear, but is quite interesting. If you develop a habit pattern, and then want to change your life and follow a new

This is research that people do not want to hear, but is quite interesting. If you develop a habit pattern, and then want to change your life and follow a new habit pattern, you're going to be less successful at achieving that 2nd habit pattern. If you want to live a healthy life, giving smoking a go is not a good start to that, and will make achieving healthy living much harder. So, it's not really a surprise that engaging in non-monogamous behavior would set someone up for failure in marriage.