Tampa, Florida - This well-meaning dog mom decided to take her Golden Retriever to a dog park one day. What happened there, however, broke her heart.

Andrea Conord shared a video on TikTok documenting her visit to the dog park, and the footage has been breaking hearts online.

Instead of happily scampering around and using the space in the park as expected, Boo sat almost motionless at the entrance gate and gazed off into the distance wistfully.

There wasn't a single other dog in the park that day, so Boo was left sadly waiting by the fence for a playmate.

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This sight is anything but easy for his owner.

"I always feel so bad when no other dogs come," she writes on her video, in which she can be seen making a pitying face.

But the disappointing outing was to take a surprisingly pleasant turn when a car suddenly pulled up on the road opposite – because the answer to their problems was sitting in it!

Boo's four-legged friend Rusty had made it to the dog park after all!

Rusty rushed to join the fellow Golden Retriever and stuck by his side to keep him company.

Little Boo the pup was soon a changed man and immediately went exploring the park with his buddy.

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Owner Andrea was delighted, writing, "Yayyy!!!"

Viewers are also happy about the unexpected happy ending.

"Thank God for Rusty because I had TEARS," writes one person in the comments section.

"first we cried because he was all alone. now we're crying because Rusty came," added another, while one user called the whole ordeal an "emotional rollercoaster."

Boo's start in life was not an easy one. He was born the smallest of the litter and had to be rescued from a dodgy backyard farm.

Fortunately, he found a safe and loving home with Andrea, and now he has good pals like Rusty to play with.