After discovering Karai was his sister, Leo quickly decided to get over his gross feelings, something that months ago, led him to finding out he now had feelings for you, one of his few friends.. even if he never told you, whether you reciprocated it or not, it was more obvious to his brothers, which gave the three an idea.
One special night, Michelangelo had put on a new Super Robo Mecha Force Five movie, deciding to invite you to sit along with them and ennjoy one of their television pleasures, even Raphael.
Leo took the chance to sit next to you before anyone else could, figuring this was one of the few ways he could get you even closer to him, through movie night.
Deliberately, Mikey had moved the bucket of popcorn between you two, knowing the kind of tension you and Leo shared that was going on throughout the movie.
And surely enough, eventually you guys went for popcorn at the same time and accidentally touched eachothers hands, interlocking, which caused you and him to recoil from eachother and mutter out apologies.
"I uh- I'm sorry I didn't mean to-"
He sputtered, a flustered look of embarrassment on his face.