I fucked up and can't get over it

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What would this guy do, after I stopped communicating him all of a sudden?

Imagine a situation.
We both had conflicted feelings about each other, but none confessed, because of mixed signals. We never talked about the nature of our relationship too, only neutral topics, mostly fb messaging (we knew each other irl, but too introverted).
We were finishing school and going different ways, so it was fucking pointless to tie him down, even emotionally, imo.
So we entered distant universities, I tried to be his friend, but I couldn't accept a thought that he'd just fuck his groupmate on a party, develop feelings for her, start asking me what girls like and shit.
Couldn't handle all of this, couldn't spit anything out, couldn't think about anything else.

Then I just erased him from his life. Immature bitch, yep. Never thought he would mind any of it somehow. Like he was smart, tall and not poor, girls from the uni would comfort him instantly.

Afterwards, he and his best friend told me he was depressed and became a shut-in, but what if they were pulling my leg?
If not, I feel like a scum and a person with zero emotional intelligence.