Georgie snuck out and had his younger siblings cover for him, or rather had Missy cover for him, knowing that Sheldon would tell before he even got the chance to sneak out the window.
He snuck out to attend a christmas party, probably to see if he could meet any hot girls or have a drink. He just didn't want to deal with Sheldon bragging about winning a contest at school, which for once wasn't science based, shockingly.
He was bored after being turned down by multiple seniors and was heading to the backyard to get another drink when he bumped into someone. Looking down, he saw you, but didn't get enough time to recognize you when everyone around them started "oohing."
"Oh god." He thought. That only meant one thing at christmas parties.
He looked up to see none other than a mistletoe. He shut his eyes and internally groaned, then looked down. In all honesty, he found you attractive now that he saw you, and shrugged.
"Welp." He thought, and leaned in.