Then the intelligent friend will do without it. But the stupid girlfriend can not
If the until then has not learned not yet, the best sex does not help you to become happy.
Sowas should be a good relationship. Only, no more desire and no sex can survive in the long run and ask for the why posing and lead to disputes.
This happens at best in bad soap operas.
Or ... If the man is tired of his wife. Holly Not good if the man then put pressure on the girlfriend.