Only twice i've had bother when with my wife.

First time was when we were first seeing eachother and we went to a club, we were sitting down on some stools talking and some fool decided to stand right in front of me and start talking to her, telling her how gorgeous she was and when she went to get up he put his hand on her shoulder.

Second time was when she was pregnant with our first. We were in a pub and as we walked in she went off to the toilet and i went to sit down. As she walked past a couple of lads who were standing at the bar i noticed them making rude gestures and commenting on how they would like to slap her arse and ride it (she heard it),and generally being really rude.

Other times comments from pissed up blokes ("oi oi gorgeous" and the like) etc dont bother me and i just laugh them off. Likewise if a bloke is staring or looking at her it doesnt bother me. Only time it gets physical or i step in if it makes her feel uncomfortable or if they are out and out rude.