At least you got him to buy a bike that fit him. My DH insists that it's crazy to spend all that money on a new bike when they are for sale all over the place at garage sales and on Ebay.
Unfortunately he won't believe me that he needs a bigger bike than he keeps looking at (I believe he's in the same boat as your DH thinking that any bike size is fine as long as the pedals spin and you get somewhere). He's now bought at least 5 used bikes. One we kept for my 13 year old son (not yet as tall as me, and at least 5" shorter than DH). Three he has sold on Ebay--wrong sizes. One other we've kept for me (a trek hybrid that I have to figure out how to get to the bike shop for a tune-up without him knowing!!! He doesn't believe in those either--he's a do-it-yourself type, but this bike needs some new parts).
So he still doesn't have a bike that fits him. He's still looking, and I'm still biting my tongue!!! In the mean time I bought myself a bike (I asked for it for Christmas and INSISTED that he NOT buy it for me) that fits and I LOVE!!! Sigh! Maybe if I buy him a gift certificate to a shop, he'll be forced to buy a bike that fits!!!
Whoever said last man standing wins never asked a girl to play!