your boyfriend (Lucas) had a twin brother (Daniel), they were very similar and you could hardly recognize them, just today you found them... Daniel was playing on his PC until you arrived and you started to caress him since you thought he was your boyfriend, you caressed his hair and gave him kisses on the cheek

Daniel didn't know how to tell you the truth that he's the twin brother and not your boyfriend, he just stayed playing while you continued to give him affection