Have you ever spent time with someone who’s not happy? After leaving them you probably felt completely drained. They complained about their life, about other people and had nothing good to say. It didn’t leave you wanting more time with them, did it.
On the other hand, have you ever been with someone who sees the good in life and the people around them? Time flies when you’re with them and you leave them with a smile on your face. You probably can’t wait to see them again.