Watch: Guide Dog Falls in Puppy Love with Pluto at Disneyland

Clearly, it was love at first sight.

Ace, a guide-dog-in-training on a socialization outing at Disneyland, took one look and Pluto and fell into instant puppy love.

In the awwwww! heard around the world, a 15-second video of the meeting was shared on the Disney Dorks facebook page, getting more than 20 million views in no time.

The video, which features Ace nuzzling Pluto and going in for a puppy kiss, is hard to resist.

Guide Dogs of America volunteer Sandy Steinblums, Ace’s trainer, explained how her usually calm pup quickly reclaimed his cool after becoming briefly starstruck.

“This puppy is one I raised (as a volunteer) for Guide Dogs of America --- he is training to be a guide dog for the blind. We went to Disneyland for a few hours as a socialization experience -- what you didn’t see AFTER the 14-15 seconds video where he settled in a DOWN was his DOWN/STAY for a few minutes while Pluto tried to break his stay,” she wrote on Facebook.

Ace will continue to undergo training for the better part of a year before he can be placed with a family that needs him, added Steinblums.

But he’s already proven he has what it takes, she added.

“ Ace entered his “formal” guide dog training at the end of January. My “job” as a volunteer was to socialize and provide him with obedience training. This was a training outing and I was too far back to correct him, but golly-be....he responded anyway. Yep! That is my boy and I am proud of him and love the Disney characters for being so kind and helpful!”