I haven’t read it so can’t comment beyond my own situation but I met my wife when we were 16 and we knew that was it, we’ve been together now for 23 years. It happens.The people talking about Aisling Murphy's boyfriend losing his "soulmate," they were in their early 20's so who knows.
That doesn't negate or reduce his legitimate terrible grief, both for the loss of the woman he loved, and for the life he was picturing for himself, and her.
But I'm sure we've all known people who thought they were with their soulmates at that age and now aren't. Maybe someone of us thought we were.
Edit: Also his victim impact statement was full of racist dog whistles. There should be space allowed for his anger and grief, he's been through a awful experience. But it was.