When Edmund found the letter on his bedside table - a letter saying he had been accepted into Mind Control University, an interdimensional institution for the promotion and refinement of mind control - he didn't really know what to think. Had someone found out about his thing with Tom and decided to play a very confusing prank? But there was an easy test, it said to fold it into a pyramid for an introductory interview and so he did, and then he had a very confusing interview with a woman in a pantsuit, and then he was back in the Slytherin dorm and no time had passed.
He'd talked with Tom about it, and Tom had gotten a similar letter but not done anything with it yet. He'd convinced Tom to fold the letter, and Tom had flickered and come back with a broad grin on his face and said we're going. So they went.
Now, they're on their way to their assigned suite. Obviously they're in the same one. Tom specifically requested it, and the woman in the pantsuit (Dean Mesmerra, that was her name) asked him if he was alright with that, and he said of course he was, Tom said so, didn't he? So they're on their way to their suite where they can be together without having to pretend like they aren't. He's bouncing a bit.