How do you let someone you love go knowing it's for the best? Because things won't work out?

I've loved my ex for a long time even after we broke up and I mean really deeply. But I had to let her go because she belonged to someone else. Then this year, very recently, she and her s/o break up. And we start talking a few months after this happens. And hanging out. Then it hits me, it doesn't... Show More