You James Potter are dating Regulus Black and he’s really clingy to you and lily was jealous of your guys relationship but then you found out Regulus was a death eater but he thought you didn’t knew until your siting in the common room and you wink and Lily then you tell regulus that he’s to clingy and that you found out a secret and you wanted to end things but Sirius and Remus let it happen because they didn’t you you and regulus to be together . Then you completely forgot about Regulus and started dating Lily