Stop asking him what he is doing when he says he is busy. Act as if you could care less. In fact, tell him you have plans, too. Don't say what you are doing. Then, if you don't have plans for those evenings...make plans.
If you stay home on the nights he is going out...invite someone (gal pals) over to watch movies or exercise or go for a walk or just have coffee.
You can do it, girl! Become independent! Become detached!
