Well, I haven't quite put it like that for a while, but the last time we got into something like this, he came back with, "Well, I don't say things like that about you!", which was met with a long, cold stare, and he added, "I guess you don't give me a reason to...".
Tbh, he would flirt with Mother Teresa (yes, even in her present state), if he got some attention for it. It's just when he flirts with the young women that I get threatened.
This is all very new for me. In the past, I've always figured that any man who wandered off was no good anyway. I feel differently about this one. I want to put him on a leash.