He hated being Regulus' secret.
If it was up to him, he would proclaim his love to the entire world. But it wasn't up to him. If his lover wanted him to remain hidden, he would. Because he loved him.
"I can't come out yet, okay?"
"You know I hate this too, right?"
He wasn't sure he could take it much longer. Holding appearances and facades were so tiring. So when Regulus came barreling toward him at breakfast and kissed him straight on the mouth in front of everyone, James thought he was going to die. Of happiness, that is.