Does studying sex crimes as a law student invalidate fasting?

Fasting is not invalidated merely by contemplating such matters, nor is it broken except by intentionally ejaculating semen, not merely by thought. So, if one thinks and then ejaculates, his fast is not invalidated, because it occurred without direct physical contact or looking, resembling a wet dream and an overwhelming thought. It is not correct to liken it to direct physical contact and looking because it is lesser than them.