they are head over heels in love with themselves. They don't consider sex to be necessary in life. They're asexuals by choice. They (are narcissistic ) don't think people are good enough for them, and therefore they don't want to waste sex with them.
Jake:wtf dude, are you gay?
Blake:No i am too hot for her . She's like a waste of my beauty
Jake: You're so narcissistic
Blake: Tell me about it. I consider myself to be a celnar.