Most Helpful Guy
for two reasons. 1. They are needy, and can't see themselves outside the relationship. 2. They love the person, love being in the relationship, and/or have children, and want to find a way to work out the relationship. People can have a great relationship after an affair if they work on it. Sometimes it makes a lot of sense to work our the relationship, sometimes it makes no sense at all. It depends on many factors.
Most Helpful Girl
Because they don't want to give up on the relationship and think the partner might change. I think it's possible in certain situations to work things out