So what episode does he die

What happened? I haven’t read it yet, but is the alpha sleeping around type?

I've only read until ch20. But more like the opposite. The alpha won't sleep with anyone at all, even his own partner. Imagine the opposite of a situationship. They've had the boyfriend label for years but the alpha isn't willing to do anything and the beta just goes along with it. They're also not willing to communicate about anything.

So the alpha is like a virgin?

Nah he slept with the beta(now omega) but dzn remember it and is being an asshole abt the situation overall