Charm person = Target can act on his own nature to decide if they want to listen to you. However they are convinced that you are entirely trustworthy. "Hey buddy, could you lend me a few gold pieces?"<br/>Suggestion = Target doesn't think otherwise of you, but what you suggest seems entirely reasonable and they can't resist it on a failed saving throw. "These aren't the droids you're looking for."<br/><br/>So for a pleasure demon, this would work something like:<br/>Charm Person = Target finds you sexually attractive (and perhaps desires you). "Y'know, I have a ten foot pole here..."<br/>Suggesition = You can make the target do stuff regardless of what they think of you (hm-hm rape spell?) "Sucking my dick sounds like a delicious idea."