Generally speaking, society generally holds a negative stigma against gambling, especially in countries where gambling is prohibited. Regarding the woman's decision to end her relationship with her partner, I think it's understandable. The first reason is that it could cause problems if her family found out. The second reason is perhaps because the woman was thinking about how dire her financial situation would be if she had a partner who gambled. I understand that gambling can be controlled, but that doesn't mean it can't cause many problems. I think that's what was going through the woman's mind.

In this situation, the man might choose not to stop gambling, which would inevitably force him to leave his partner. It's also possible that the man is addicted.