Ade would definitely know him, both from same house/year and for the fact that they still play Quidditch together. I don't see these two not getting along. Ade appreciates the serious attitude toward Quidditch and knows a thing or two about not being able to be idle. lol. Though, he'd definitely be amused by his pranks. Ade might tease him a little about being a romantic, but not too much I think. Someone has to be.