i would let the bear eat me and choke it to death
or i could propose marriage with the bear, then have children with it, and live a perpetual life of happiness in the Hundred Acre Woods. but wait, the fight hasn't end, it seems. utilizing my superior knight intelligence, i slowly plant false evidences around the house, and start writing journal/diary entries of false accusations of domestic abuse.
i would brainwash the children that mommy/daddy is a bad bear, and had been seeing other bears in its daily commute to work. then i'd subject myself to some self-torture, as to plant lifelong evidences of physical injuries. a cut here, a slash there. nothing that would kill but something that will leave a mark.
then i will talk to the neighbors and get along with the busybodiest of them all. i will tell them stories - believable ones at that, and leave flase traces and hints to a secret, abused life led behind locked doors. i will plant credit card information for purchases of BDSM items including handcuffs and whips to further insinuate that the bear ive married indeed had been using me as nothing but an item of ventilation, fetish and abuse. also, id slowly funnel money the bear made into a private bank account of mine, leaving the family income stagnant; never growing, never losing, as proof of purchase, using the money the bear made.
then, in a grand finale, i will "reveal/confess" everything to the HAWPD. depending on the charge and witnesses and the evidence, i would be subjected to taking half of the bear's properties, with the big lump sum ive stolen from it. custody will definitely be given to me but the kids will, of course, be sent to an orphanage, but they'll find revenge on the bear itself, for i have been the victim in their eyes for the whole time.
i walk away, knowing ive won the battle by doing full mental damage to the bear and then some. it'll probably kill itself in prison for all i care
or you know, have it eat me and choke to death