In my opinion, whatever the reason for doing so, cheating is absolutely wrong and shameful. Why go have sex with someone else secretly when there is already someone who loves you? It just shouldn't be allowed to happen. Think about what the girls being cheated on thinked when they found out, they're worlds were absolutely ripped apart, and why anyone would want to do that to a girl who is in love with you is beyond me. Also, manipulation makes him a monster because (and I don't know all the details of his case of manipulation so bear with me) to purposely manipulate the mind of someone is just wrong, it makes them feel like the 'bad' guy. Also, I don't wanna even tell you how drug abuse is so unbelievably wrong, especially spiking others' drinks with EXTREMELY dangerous drugs. It could kill them.