Well I am also going to be a little of the Devils Advocate here. Just a few questions for you to, being a women I can tell you that some women not all it really depends on the person, tend to ball up feelings and hold on to things in the past that have caused them hurt, something their SO did etc.. Instead of talking about it they hang on to it, or they talk about it and never really let go of it and move forward with their SO. So here are my questions for you? We all know that marriages have their ups and downs have you done something recently or in the past that she might be hanging on to?? Flirted with someone else? or anything that could have caused her to feel rejected in anyway? If so maybe you may want to ask her if she is hanging on to instead of letting go of something in the past that has hurt her. Just a little start anyway, if there is something there, I am not saying that there is just a thought I had. As we all know communication is the key to keeping your marriage alive, along with the sexual aspect of it to. Also are you both comfortable about talking about sex outside the bedroom? I know you mentioned that your communication is getting better. As far as having someone else to talk to is great, but remember you are still married. Also there is a term "emotional cheating". Are you by chance, since it is easier to talk to this other women, and as you said, you are happy and feel good when you are talking with her, that you may be having a little more then friendship feelings for her which is causing you to have more questions about your marriage? Just a few questions. Keep us updated. Best wishes to you.