Taito

Taito is the slash ship between Taichi Yagami and Yamato Ishida from the Digimon Adventure, Digimon Adventure 02, and Digimon Tri fandom.

Canon
In adventures episode 8, Even though they fight a lot in this episode, there's also a lot of major touching between them; they hug and hold hands both at the beginning and the end of the episode. Plus, in this episode Matt cries in front of Tai. Matt is usually very closed off the fact that he could open up to Tai like that definitely means something.

In the prophecy, Matt and Tai stand there holding hands while they get shot by what other characters call "Cupid's Arrows" and "arrows of love." In a very emotional voice, Matt offers to hold onto Tai in case he's scared, and Tai says he'll do the same for him.

In the crest of friendship, Tai never gives up hope that Matt will come to help him, and then Matt shows up and holds Tai in his arms and they start talking about how much they mean to each other and how they'll never let anything come between them again, Matt, in fact, does cry. even though earlier in the episode he'd said that he never wanted to let anyone see him cry. The strength of their bond with each other actually causes their crests to glow and heals the Digimon so that they can win the battle. When the Mat and Tai run off together, their arms are still around each other.

Fanon
It is the most popular yaoi ship in the Digimon fandom. Mostly due to their relationship. It rivals Taiora and Sorato. But it could be possible that Matt and Tai might have romantic feelings for each other. But just a bit young to admit it.