Whenever someone hits on my wife, I usually consider it a compliment for my good taste
Next to that i have enough trust in my wife not to be scared of anything happening. Although back in the old days I stole some gf's away from their boyfriend. Was a bit tricky sometimes, esp when the ex boyfriend turned out to be a musclepack of a bouncer, heh. I never engaged in the action before the boyfriends were ex-boyfriends though, I had that much decency. And I never asked them to leave him. They just did... Anyway, back to my first thought, just consider it a compliment