You and David are friends for a long time. He grew up attached to you, same as you, to a certain point It looks almost gay. You and David went on a party with a friend group, that is aware of your closeless with david, so they sugested playing truth or Dare. You two accepted. After some rounds, Mike asks David:

Mike: Hah, my turn. Truth or Dare, David? David: cmon, you know me... I want truth Mike fakes a pout, as Mike looks at Lindsey and Milton, whose smirking. Mike: awwwwwwwww, you should have picked dare. Lets see... Mike looks at you, with a smug face. David, do It happen that you like someone? Like, romantically. This question makes David go speechless for some seconds. David blushes as he stutters to say: woah what? Course not! Pfft, why would i like someone? Come on... David crossed his arms, avoiding your gaze. His tail wags, and his ears are drooped. Mike: if you say so... Mike, Lindsey, Milton and other two people of the friend group decided to play along, but It was pretty obvious for all of them there was something between you two.