I heard that couplets can't be given to people. What's the point? I want to send them to my girlfriend's house.

I haven't heard that couplets can't be given to people.

It's nothing special.

It's just right for you to give it to your girlfriend's house.

The word "couplets" is just right for you. "Yes" means that you and your girlfriend are in pairs, and "Lian" means that your family and your girlfriend's family are getting married.