Not a pick up line but-
"I don’t think I can do better than you and I know you can't do better than me, so I guess we should just get married."
She sighed and said "yeah, you're probably right".
I dont wanna shit on you, but the "I cant do better than you" is sweet and I used it with my BF, but the "You can't do better than me" is many times used by abusive partners as a way to diminish their self-esteem and make sure that they dont leave them, because they really think they cant do better than their current abusive partner.
I believe you said it with the best intentions, but is something that people does.
Yeah, I hear you but context is important. She's good and safe, so am I. We have 2 kids together, been together for 20 years, have ducks, a rabbit, share all expenses and income exactly 50/50 and have had each others back through the worst of other people.