Constant arguing doesn't make for a happy marriage.

不断争吵不可能使婚姻幸福。

I'm sure you'll all join me in wishing Ted and Laura a very happy marriage.

我相信大家会愿意与我一起共祝特德和劳拉喜结良缘。

It wasn't a happy marriage.

他的婚姻并不幸福。

May you have a happy marriage.

祝你有一个幸福的婚姻。

Have a happy marriage, then have kids.

而要先培养幸福的婚姻，再生育孩子。