Unexpectedly Stranded Together
There are few things in life more aggravating than being stuck due to a situation where a person has no control, but being stranded together can turn into memories to cherish for a lifetime. If a bad storm places trees across all the roads, or a blizzard snows a couple into their hotel, their time together will be another adventure. Rather than sitting around moping, the two people who have found their perfect partner will be able to find a way to enjoy it even as they wonder if they will ever be able to get back home.
Resources can be very limited during an emergency, but that does not mean ideas are in the same category. While a couple might not be able to travel home, looking around at what they have with them could be a good start on figuring out how to spend their extra time together. They might not have electricity, and even the heat might go out. Figuring out how to get through basic survival should keep them occupied for at least a while.
After the needs of survival are met, the hours can drag on. Playing games is a good idea, but many modern games are now online. If the electricity is gone, phones and computers will soon fade into the background because their batteries will be drained. Falling back on old-fashioned games is a good idea as long as there is a source of light.
Couples used to do things like read to each other, and that could occupy their day. For those who still have plenty of hours of darkness, choosing topics to discuss could be fun. Word games might give them a way to communicate with each other, and they could pass endless hours just with puns. For those who have been dating long enough to become serious, planning for their future together is also an option.