(1) Play when she is sleeping
(2) Say "I Love You" more
(3) Win money. Normally I used to lose at any gambling activity.
(4) Teach her to play.
(5) When she is sleeping, play sublimital tapes on the greatness of poker.
(6) Buy her a diamond or anything else she wants. Maybe a top ten list for her.
(7) MTTs are time intensive, maybe switch to SnGs or ring games.
(8) No divorce. Who would actually cook and wash your clothes while you are playing poker?
(9) If she is religious, tell her its not really poker but an exercise in charachter observation and good for the spirit.
(10) If she is used to you playing other computer games, say would you rather me playing Everquest or Poker?
(11) If you have kids, tell her youll bathe the kids every night and babysit them on the weekend.
(12) If she likes watching TV. Buy a tv tuner on the computer and (big moinitor), have the tv up while you are playing and you both can be entertained.

In all serious though, if the spouse doesnt like poker, maybe try and agree to some allotted hours and play. If that doesnt work, stop playing!