If I am able to get my wife out of the house to have dinner with me, we always have a great time. But she does everything to prevent this from happening.
My sister-in-law is very helpful here. She knows W and I need time alone, so she encourages us to go and baby-sits.
However, when it comes to sex, W and I are on our own, of course.
Try to surprise your W. Mention in passing some events that will be happening, and if she responds favorably, get the tickets. The element of surprise often trumps the same old sh!t.
