1. Portraying a situation better than it actually is; telling sweet lies.
2. To sweet-talk a person into doing or believing something.
No matter how bad things got, he'd always be selling sugar, making you believe he was perfectly all right.
To prostitute oneself; to sell one's 'sugar' for money.
You better not fall in love with her.. that girl's selling sugar at some sleazy street corner every chance she gets.