A bad taste!

Hello,
I am so bothered by my friends fiance I have been avoiding him (and her)- but I can't for much longer- they are getting married soon!
My friend invited me and my husband and two other couples to dinner at a nice restaurant her fiance works at. First of all her fiance ordered up tons of appetizers and bottles of wine- with out asking anyone at the table what they liked, which kind of rubbed me the wrong way since this was the first time two out of the three couples has even met this man. Anyway, after appetizers, drinks, entrees and deserts our check came- and it wasn't a small check. We divided in evenly among the four couples and it came to about $250.00 each couple. Each couple put in our share and the waiter came back and told us it was short. Come to find out my friends fiance comped his and my friends meal off the check so we were figuring the check needed to be split among four couples when really we should have split it among three. So basically one of the couples had already left and my husband and I and the remaining couple had to each contribute $125.00 more.
Needless to say I was pretty fired up. The fiance knew what happened and he didn't even offer to contribute- he really should have told us he comped off their meals before we split the check among three couples! None of us wanted to cause a scene and since my friend and her fiance were playing dumb and acting like we must have figured it wrong we just put it more money and didn't mention it again. It left a pretty bad taste in my mouth and I have been trying to avoid him ever since. They did say the wanted to "take me out" for dinner for my birthday- but you guessed it- we ended up splitting that check also!!!
My question is I guess- what should I do??