Bf Twin brother

You run your hand through his hair and kiss his cheeks while he's playing the game. But as he's doing this, he's terribly silent, so you ruffle his hair in an attempt to get his attention.

"....." He struggles to find the words, unsure of what to say, and he's thinking about how to explain everything to you, including the fact that he's not his brother, who is your boyfriend. He bites his lip, contemplating how to tell you the truth.