How come when I've tried to talk to him about what he'd like for our relationship has he avioded the issue?
Because he's not willing to disclose, and meet your need for responsiveness at this time, for whatever reason.
You could go about meeting your own need for peace of mind then. Could ask where you stand:
"Do you mean "friends" like actual companions and friends? Just not lovers?"
"Or "friends" like this is the non-breakup move? Not friends, not lovers?"
If he hems and haws, it the "non-break up" break up move.
Or you could inform him where YOU stand.
"We are broken up. This is too nonresponsive for me."
If you decide to get back together later -- do not agree until the responsiveness thing is resolved.