Oh yeah he'd be so upset with me if I bluffed and took away his pot
See, that's one of the reasons it got uglier. After I mucked and he basically told me off, I felt bad so I asked him what he had. He then asked me to tell him what I had first. I was worried just in case he had a bigger pair and if so, he'd have thought I stole the pot from him; which wasn't the case at all. So I didn't tell him what I had.
It's not as if I had nothing and planned a bluff. I did have, after all have a pair of Jacks.