General query to young folk: My wonderful daughter has just been dumped by her boyfriend of almost 2 years (both in their early 20s), with absolutely no warning. She is completely blindsided - they are living in different cities but he was just up to visit her and everything seemed fine. They talked daily and she thought they were solid. Her best friend says the same - no warning signs whatsoever. So, regardless of his reasons, what can I do to be supportive?

ETA - thank you to everyone who has already answered, it’s really helpful for me to get this gentle and constructive input. It kills me to see my cherished and wonderful kid in so much pain, and I know it’ll probably get worse before it gets better. And it’s awful that we don’t live closer - she is a plane ride away.