My husband has a psychiatrist he tried out when he got out of rehab. He told him we were working on being closer but that I was having problems intimately. The psychiatrist did not last long. He told my husband that lots of couples live happily in open marriages and that we should think about that. My husband said he wanted a relationship with ME, told him goodbye and left. I guess my thought is a bit different now at age 35 than when I was 20. I believe I deserve respect and a husband that loves me. My husband being in bed with someone else would not be very respectful or loving at all, so no way!!!
One thing I have noticed about those with an addict. The sense of what is right and wrong is changed. Mine was too until recently. It was if he could just not do this as much or he only drove drunk twice or whatever. Those things are wrong and we need to see them as that. Don't let their sense of warped reality change yours!