Re: Marriage that doesn’t last
no, i think you have a year as a couple to send out thank you cards for the gifts you’ve received, but you don’t wait up to a year to actually give the gift! showing up with a gift 6 months after the wedding would be super awkward!
to answer the question, nope. a gift is a gift. if it didn’t work out, too bad for the couple, but they’re not obligated to return anything.