Sage, I so know you feel and you aren't crazy at all. It's hard when your love is spending all their enengy elsewhere and you've got no outlet for yours. It's disappointing and can hurt when you do get to be together and you want to focus on them but they're drained from their other activities.
I know it's probably not helpful to hear right now but it will pass and things will normalize again. I second the idea of getting some extra attention or some special pampering when he gets a chance.