On Homeland, Nick Brody is captured and imprisoned/tortured for eight years. His wife didn't get remarried but she did start seeing someone else.
Frankly, 8 years is a long time to wait... I don't blame her. That said, I would wait. I would probably move in with my mom or Mrs. Bee's mom though. I couldn't raise two kids on my own!
How long would you wait for your SO if they were kidnapped and MIA?