Supporting a friend/ex

My boyfriend and I broke up last weekend and we're just going to be friends. We'd been saying five months. The reasoning? He's going back to his home country across the world when school is done. I'm kind of glad to have this 1-2 month gap to get over the awkward breakup slump and be friends.

I don't know if he has a friend locally to be a shoulder to cry on. Is there any way I can support him as a friend that's not weird?

Regardless of the romance being over I am someone who cares deeply about my friends and have always offered a crying shoulder through many breakups but what's weird is that this breakup is.... With me.

He looks like he's fine but I am noticing some things that make me think maybe he's struggling and hiding it. How can I support him?

Also I'm not trying to get back with him. I am not someone that would handle a long distance relationship. If we'd been able to date longer maybe I would have considered an extended stay in his country but we only got 5 months and "if wishes were fishes" and all that. I like him as a person and am happy to be his friend despite the breakup emotionally affecting me too. But I have old friends to lean on here and be vulnerable with.