Wedding Wishes Cards

Can someone please suggest some significant marriages wants to write on a wedding card when congratulating the bride and groom ... I am hopless the language plz give me some ideas .. thank you

How do you know? friends? parents? random people?
it is important to make it sound like you have thought of them when he writes - to set personal details .... can not do it without more info

May the best day of your past be the worst day of your future.

I'm desperate too, but what Callie said W is beautiful! It has a tear in his eye!