You forgot that we live in the modern age of technology. And if things come down to it, they can even resort to medicines.
Yeah, we live in a modern age and there are various medications which can solve some issues. But they all come with side-effects.
Like, any medication for suppressing male libido typically have common side effects like erectile dysfunction, gynecomastia, fatigue, and muscle loss.
While increasing female libido medication can have side effects ranging from mild dizziness and nausea to severe drops in blood pressure.
Aka., you should not depend on medication, unless extremely necessary.
Plus, in case of MC, using medication or any method would basically be suppression his sex drive, which is what his GF didn't want him to do. Because suppression something natural would cause various issue, especially mental and emotional.