For Ben Affleck and Ana de Armas, it’s a case of reality ruining their pandemic love affair.

“The quarantine was unique because they had downtime and ­really got to know each other spending time at home,” a source who knows Affleck and de Armas told The Post.

De Armas just signed on for the film “The Gray Man,” alongside Chris Evans and Ryan Gosling, while Affleck will next star in ­George Clooney’s adaptation of the book “The Tender Bar.”.

Rumors had first swirled about a split when they didn’t spend the holidays together and de Armas went home to Havana, Cuba.

“Ana decided she doesn’t want to live in LA and Ben wants to be close to his family,” said the source who knows both stars, of Affleck’s three young children with ex Jennifer Garner.

There was also the issue that — as Page Six reported — de Armas, 32, wants to have children of her own, while, friends said, there is no way Affleck, 48, wants more kids.

I think any setup is tough to be a person coming into a relationship like this,” said the source who knows the couple.

De Armas was spotted in photos wearing what looked like an engagement ring but was quickly revealed as a prop for “Deep Water.”

De Armas moved into the actor’s Brentwood home and, in June, cheekily planted a cardboard cutout of herself on his lawn — reportedly as a way to troll paparazzi

Even though de Armas has moved out and is said to be looking for a home-away-from-Cuba of her own in West Hollywood, the source who knows her and Affleck thinks all hope might not be lost

“They had a really solid relationship and are truly upset to have come to a place where they need to break up,” the source said