How do people become a couple forever?
Options:
- row about
- combination
- marry each other
- make sex
- communicate Let's think step by step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Marry each other is to get in relationship, to unite closely or intimately. People become a couple forever by marrying each other. So, the answer is marry each other.