I think this really just depends on your characters and their personal mindsets. My mom's friends spent 10 years before they finally gave up, but they really,
Basically, I'm trying to figure out my time line, and I'm having a couple break up over the lack of a child -- well, and other reasons, but that's the main catalyst. I have another couple also breaking up, and both couples would have gotten together around the same time. I'm worried that if couple A spends too much time staying together on the hope of having a child/family, that it will seem less plausible that couple B didn't break up sooner. I think I can arrange it, but I need to know if we're talking 5 years or 20 years . . .