Wow, rob668, your situation is exactly like mine. I'm 46, wife 39 and she has always initiated sex and was the aggressor. I didn't initiate sex much and is one of the reasons she left. We did go MC last year which we both thought it helped. One thing I realized is that since I didn't initiate sex, it made her feel less attractive and desirable.
I have been DB for the last 3 months. Take all the advice here. It does work. Be mysterious and do GAL. Don't tell her the details what you're up to. Just say "I have plans". Be mysterious. Sometimes I slip and try to go out of my way to please my wife. This backfires. It assures her in her mind that I still want her.
Try to create a vision in her mind what life will be like without you. She'll start missing what she took for granted.
