10 10 In position with Over card

[Mark1808]

Commerce $5 $10

Loose player makes it $50 to go in mid late position (he has been making lots of raises) I look down at 1010 and make it $100 to go and he calls.

Flop comes J62 rainbow and its checked to me. I bet $150 and get called.

The turn is again checked to me and I check back.

The river is again blank and my opponent bets $100.

I fold and my opponent shows 99!!! Bad fold?