Him not wanting to get into another relationship's kinda makes sense to me. For him the VRMMO deathgame just ended months ago. His wife's death probably still fresh on his mind.
There's also the whole "dead players are returning" thing. His wife might comes back at some point.
Schnee's situation on the other hand is quite sad. Imagine devotedly waiting for your beloved crush for 500 hundreds years, only to find him still not get over his wife yet. She must've been thirsty desperate as fuck.