I have two babies here. A sir Regulus Black, found on this journal, and a miss Eddie Lovegood, profile found here.
Reggie: He's a child, insecure, needy and secretly has a great sense of humor. Naturally, he puts up a front that leaves people thinking that he's just an arrogant ass --which he'd prefer than the truth. He strives for perfection and is all too aware of his shortcomings, and, as thus, will judge the people around him to feel better. Once a ecstatic member of the DE, he's now suddenly becoming quieter.
Perhaps we can find some excuse to force these two together? It might be easier after Regulus has ran to Dumbledore, however.
Eddie: She is a wildly active conspiracy theorist and skeptic; if it can be imagined she has believed it. Eddie loves everyone, dearly, and often nurtures or mothers the many wonderful people in her life. It takes quite a bit to get her to dislike or hate a person, as she is quite optimistic. She is a bookworm, a self-proclaimed spell/potion inventor and newly wed.
Of course, being that Eddie is also part of the Order, they will have more reason to interact. Eddie is Muggleborn as well and might be more inclined to gravitate towards someone she'd feel shares her perspective and feelings on the current matters. She'll be sure to bring him muffins or something warm and baked. C: