Presumably, Michael had been expecting more of the friendship and companionship he’d been looking for all his life and thought he’d now found. But this time his two supposed friends had brought their knives and dream diaries with them. Killing Michael had been their intention from the very beginning.
Relate wouldn’t be a strong enough term. This goes back to the last note too, people pretending to be one thing when they never were at all and never understanding the damage, the hurt and the pain they caused.