Yeah, I was thinking I shouldn't have posted the result, I will remember that for the future.

The pot already represented more than half his stack, in fact it was most of his stack so I figured that he was happy taking the pot down now and if he gets called it would be a bonus for him. Plus, because he limps in every pot that he is the SB, I certainly didn't put him on the nut flush so it is possible he felt I had a 4 flush and he was worried that if I caught a flush it would be better than his.

Thanks for your response.