(sorry if it doesn't make sense, but I'm trying to make sense about it...)

Situation: My little Brother is a hard working, that is with his hands, guy that has a much higher paying job than I have. No resentments here, he earns it. With this he - on loan - bought from my 3 uncles and our father - who all together inherited it - the big house of my Grandfather. Nothing wrong there as well. Apart from this paid work he has put all effort in it to renovate the 50 year old house. I respect that and I helped him as best as I could. His girlfriend did as well.

Now I had to learn she left him in January. She left this big house, the big paycheque and -> now lives with her parents again.

I don't get it. My Brother is not the abusive kind, he has certainly never struck her. Her parents whom I met during Holidays were kind people as well. They even gave me presents for Christmas.

To top it off: She even abonened the cat which now lives solely with my Brother.

He didn't even tell our Mother for a week and hasn't told me himself. I only know through my Mother.

What can I tell him? What can I talk to him about?