Photo of man teaching his girlfriend to read the alphabet goes viral

(Photo courtesy Imgur/Reddit user sho3)A sweet photo posted on Reddit is warming hearts everywhere.

The gone-viral image is of a man teaching his girlfriend, who suffered a stroke, how to read the alphabet.

"I was sitting next to this couple at Starbucks this morning, this man John was teaching Linda the alphabet. He told us that she lost her memory and was re-learning how to read. Patience, love, and understanding at it's finest," Redditor sho3 wrote.

Matthew Ballestero, the photographer who captured the tender moment, posted more of the story on Facebook:

"Meet Linda and John. As my friends Alexandra, Stephanie and I were sitting at Starbucks, we noticed this elderly couple. John put flashcards in front of Linda trying to help her remember what she had forgotten. My friends and I were overwhelmed by the love that these two had for each other and I knew I wanted to let them know how much of an inspiration and a perfect example of true love they were to me."

Ballestero added that when John got up to use the restroom, Linda continued to study the alphabet. When Ballestero helped her when she got stumped, Linda exclaimed, "You are so sweet! You see, I've lost my memory and I'm trying to get it back!"

One Facebook commenter, a barista at that Starbucks, praised the lovely couple:

"They are regulars at my Starbucks. They were dating until she had a stroke. Now he takes her out during the day and has been helping her relearn all her skills. They are truly amazing people."

One imgur commenter summed up the photo perfectly: "Definition of love right there."