Do you show up for friends who have been supportive?

When my ex broke up with me, he was going through a major depression .

I wanted to remain his friend and I was still his cheerleader, and wanted to be his biggest supporter .

But he made me feel like he couldn’t be bothered with me. Replied to my emails with one liners. Connected with mutual friends but barely acknowledged my existence.

I didn’t necessarily want to get back with him but I wanted to maintain a friendship.