Please explain to me!

[Electrolux]

Good regular raises to 30 UTG ($1000 4 handed - full stacks). I pop it up to 130 OTB with [Ks], he 4-bets me to 300. I push. He calls.

He tables [8h].

My kings stand.

Chat:
Me: ???
Him: I had a read
Me: Not too good?
Him: Nope, not this time
Me: LOL. You are probably right on the money next time

But I still haven't figured out what kind of read that would be and what range he put me on. Please assplain.

[Kuso]

he wanted to give you a false sense of security so that you will donk it all back plus some more later.