By doing your own thing you WILL be more interesting to her again.
That's the paradox.
But that can't be the reason you do it, or she will sense it. You have to REALLY BELIEVE that you are doing your GAL things for YOU, so that you convey (or maybe even tell her) "I would still love for our marriage to work out, but right now I need to work on some things for ME. Whether these are improvements I keep in this marriage or take with me to my next relationship, I've done a lot of thinking and realized that this is who I am, or at least who I need to be."
When you are with her, you should treat her like a roommate, or like you would the mailman. Friendly, civil . . . but not a BEST friend, and certainly not like a husband would treat his wife. Be a great listener.
