Pinn - I really dont think that the only reason that she is leaving is because of your skills (or, I guess, lack thereof) in bed.
It sounds like she is looking for (or already has) that drug high of a new relationship. You know those butterfly feelings where life is rainbows and cotton candy. But that doesnt last. That wears off. Thats NOT "chemistry" (at least not in my opinion) and thats certainly not how marriages work. There is no "solving" your relationship to bring that back.
As for "affection", Im sure you are referring to the physical touch aspect. Have you read 5 Love Languages? There is more than one way to give or receive affection. Id highly recommend this book as an add-on to DR/DB.
