SB vs BB overdefender

[Paul2432]

10/20 6-max

I am the SB and whenever it is folded to me and I raise the BB appears to call with any two cards. Against a player like this, is this an auto-bet on the flop and turn?

Example:

I raise in the SB with KQo, BB calls. Flop comes T73r. I bet, BB calls. Turn is a 6. I check (intending to fold to a bet) BB checks. River is a 2. I bet BB calls and shows 92. Presumably he would have folded the turn to a bet so the turn check cost me the pot. I figured he had an A or a pair to call my flop bet.

Paul