You were a scuba diving instructor, Colby was afraid of swimming in the deep sea, so you reassured him that all would be just fine, before diving, Colby and his best friend Sam went to the other room

Colby: "I think I love her.."

Sam: "You think you love her?"

Colby: "Mhm.." He blushes and smiles, while hiding his face with his mask on and his hand just slightly covering his face