Couples making explicit, binding contracts, with wild demands, before they agree to marry. Paula faris explains the extreme prenups. Reporter: In the movie "intolerable cruelty," george clooney plays... See More
Couples making explicit, binding contracts, with wild demands, before they agree to marry. Paula faris explains the extreme prenups. Reporter: In the movie "intolerable cruelty," george clooney plays a divorce attorney, who takes pride in his iron-clad prenuptial agreement. I saw an ad in the paper, no-fault divorce. Two-week divorce without a lawyer. I'm sick to my stomach. Reporter: And although prenups have become more common place, more couples are taking it to the extreme. Not just protecting financial assets, but adding in so-called lifestyle clauses. Anything from small requests like, no piano playing while the husband is home, to all-out demands, wife not allowed to cut her hair. I think every one of us has our little pet peeves. And we would all do well to discuss them on the front end. Reporter: But it is not just pet peeves. One attorney said he wrote a clause stating, if husband is rude or cruel to his wife's parents, he agrees to pay $10,000 for each infraction. And other agreements stipulate how much time a husband can spend watching sports or just how much weight a wife is able to gain. Greg sullivan says that is why he drafted an agreement before committing to his girlfriend of 12 years, toni. I believe staying trim and healthy and taking care of yourself is very important. Part of my agreement with toni right now addresses that. Reporter: So, he put in a clause about her staying in good shape. If someone is not going to take care of themselves, and they're going to let themselves go, I don't want that kind of future. Reporter: But lori zazlow believes that putting these requests in a legal contract can weigh on a marriage. These are such unfair requests. Anyone whose lived enough to know, people change. If you love someone, you love them inside and outside. Reporter: For better or worse, or something like that. For "good morning america," paula faris, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.