Boyfriend “isn’t ready”

Boyfriend and I broke up a while back because he was working too many jobs and didn’t have time for me. He quit one of them so we’d have more time together and we got back together, or so I thought.

He asked me to be his girlfriend right after we met up again and I said let’s wait...

Fast forward several weeks later of seeing eachother, going on dates, having sex, giving eachother oral, etc everything you’d do in a relationship.

I ask him why he hasn’t accepted my relationship request on Facebook, because I thought it was kind of odd.

Now he says “we’re not ready”. I said “you mean you’re not ready? Because ive been down for you since the start. You were just too busy for me” then he says “I’m not ready.”

THEN WHY THE HELL HAVE WE BEEN HAVING SEX AND ACTING JUST LIKE A COUPLE

I don’t know what to say to “I’m not ready”

Should I leave him on read & let him think about it? Or what should I do?