An employee who said they would never marry just handed out wedding invitations at my wife's company

An employee who previously said they had no intention of getting married and didn't even give wedding gifts for other colleagues' weddings
has suddenly started handing out wedding invitations now that they're almost forty...
Of course, they didn't come to my wife's wedding or give a gift either lol. It's quite inconsiderate, but since they are a colleague they'll have to keep working with, my wife is worried about how to handle it.