I know, but that is how Malakaus is. He takes anything he wants from anyone who can't stop him. Be it your life, your money, or in this instance your virginity. He isn't a nice person. He just isnt a raging psychopath. More of a function psychopath. I mean, he not inclined to do the while rape, pillage, and burn shtick. But he did miss it and was bored, hence why he joined up with a pirate crew.