What's one marriage lesson you learnt from older couples?

Not something you read in a book or heard in a reel. Something you picked up from watching an actual couple over the years.

Could be your parents, grandparents, relatives, neighbours, anyone.

Maybe they taught you something about patience. Maybe about how couples deal with money, family, disagreements, or just the boring everyday stuff. Or maybe you watched a marriage that made you realise what not to do.

What's one thing that stuck with you?