It is not unusual for an elderly man and an elderly woman to meet each other, fall in love and get married. The only difference between young couples and elderly couples, is that the elderly may need to do more planning before they get remarried, according to Wealth Management in "Never Too Old for Love."
The main thing every elderly couple getting married needs is to understand is that every state has default rules for how spouses must be treated in an estate plan and in medical decision-making. This means that any current estate plans need to be reviewed and changed to account for what the couple would like to do with their estates. Advanced medical directives and powers of attorney might need changing as well.
Elderly people can and do fall in love with each other and get married, just like anyone else. Life does not end when people reach a certain age. However, those who do get married later in life should consider meeting with an estate planning attorney to create an estate plan that fits their unique circumstances.
Reference: Wealth Management (May 1, 2018) "Never Too Old for Love."