Listen to the wisdom on this board.
You are a young man with a young marriage. Put the priority where it belongs and support your wife. If you made the right choice and married the right woman, she will always remember and appreciate that you put her first, and that will come back to you over the years.
She offered to take you to a Mavs game, so obviously she recognizes that you are giving something up, and she wants to make it up to you. Lame seats or not, take her up on it. You'll see a better team, imo, and you'll have a nice getaway with her.
Better yet, here's a proposition for you. Christmas is coming. Give her a gift from you to both of you. Get two airline tickets and a couple of nights in a hotel for a weekend winter getaway to Boston. It will be a special adventure, and if you do it, I'll GIVE YOU two tickets to a game at the Garden.
If you want to go that way, shoot me a PM and I'll send back a couple of dates to chose from.
We all love the C's here, but let's keep first things first.