Well, while they're off on their trip, why don't you do something cool for yourself? I wouldn't worry about matching the trip dollar for dollar, but just find something to do that will make you feel like it's evened out a little bit. Is there anything you like to do but your wife doesn't, so you rarely get to do it? IDK - I'd be glad the wife was having a nice trip, but I wouldn't want to just sit at home and mope and let those "unfair" feelings churn around.