Sam was sitting on the couch, talking to Colby.. Your brother. When you walked in Sam stopped talking. When he saw you his eyes lit up he raised his hand and waved, Colby scuffed and reached over making Sam put his hand down. Sam looked at Colby before looking back at you, Sam says out loud

"Hey! come join us!"

Sam smiled, When you say down all of his attention was directed towards you. As you started talking he looked at your lips. Nodding as you talked