Welcome to the club no one wants to belong to. You are among friends here who will give you honest feedback and ask you to take a really close look at yourself and your relationship with your W.
You've told us what's not going on in your M...and have given us a bit of an idea of what you are missing....but what else is going on in your lives that could be affecting the way she's behaving now? Kids? Work stresses? Finances? Age? Physical difficulties? Any of the above?
It sounds to me like you are actually missing what most of us are missing...and that's "intimacy" in the relationship that you have with your W. Kissing is a VERY intimate thing for someone to do....if for some reason she doesn't feel emotionally connected to you at this point (and that could be due to any myriad of reasons) intimacy is likely to be affected.
Has she ever been comfortable with displays of affection outside the bedroom or did she used to be comfortable with it and that's changed?
I'm also going to ask you a question that will require you to take a good look at your own behavior. What did you do when you two were dating and early on in your M that you don't do now? Often there are behaviors early on in our R's that we do that attract our spouse...but we don't continue those behaviors once the M becomes comfortable. Just put some thought into that...it's a place to start anyway.
Try to give us a bit more in order to help guide you.
