As my gay best friend would say: girl, you can't pick up social cues for shit.
Friends are great, but that doesn't mean that they're smart, pursue healthy relationships, or make good decisions. However, they're your friends, and you've got to stick by them even if it means saying nothing as they walk into an open pit full of the sharpened sticks of marriage. Most importantly, you've got to hide the fact that you know that they are walking into a world of hurt and life-scarring emotional wreckage, because if you told them they were making a bad decision, they'd just jump in the pit head-first.
No, learn from these ladies and just ride it out. Stay vague, stay friendly, and when necessary stay in a state of incoherant noises and giggles. Eventually, they'll get divorced and things can go back to normal in 10 years, and then she can finally find a good mate among the 40-something divorcees who are left. You're a good friend.
(by Johnny McNulty)