Do your homework. It is so true, if you have problems in your marriage poly will only make them 1) temporarily better 2) different and 3) worse! At least that was my own experience.
If you are looking for friendship, your husband does not have to fuck someone in order for you to find it.
If you and your husband are on different pages sexually, there are many interesting ways to explore this and try to find a happy medium.
You DO have lots of choices!!!
Formerly married to Sundance
Boyfriend -- Butch Cassidy