Bojack and Tenisha in “Unfinished Business”

Bojack

[convincing Tenisha in the bathroom] Nobody completes anybody. That's not a real thing. If you're lucky enough to find someone you can halfway tolerate, you sink your nails in and you don't let go. No matter what.

So what? I should just... settle?

Bojack

Yes. Thank you. Exactly. Settle. Because otherwise you are just going to get older, and harder, and more alone. And you're going to do everything you can to fill that hole, with friends, and your career, and meaningless sex. But the hole doesn't get filled. And one day, you're gonna look around and you're gonna realize, that everybody loves you...but nobody likes you. And that is the loneliest feeling in the world.