Quote from Chandler in The One with the Morning After
Ross: Look, we're trying to rebuild a relationship here, right? And how am I supposed to do that without being totally honest with each other? Joey: Ross, look, I'm onboard about the total-honesty thing. I am. Just not about stuff that's gonna get you in trouble. Chandler: He's right. Nobody's going to benefit and you'll just hurt her. Joey: And there won't be a relationship left to rebuild. Ross: Don't you think- Chandler: Look. If you absolutely have to tell her, at least wait till the timing's right. And that's what deathbeds are for.