She doesn't want me to "look around"
I'm 6 months into a serious relationship. My girlfriend however often complains that she hates the way I "look around" at other people. I often try in vain to reassure her that i'm not looking at people to consider them in any way, sexually, emotionally or otherwise. I am simply acknowledging the people around and just checking on body language and sorts. It's something I do instinctively. It's like walking down the street and glancing at the person that passes you just to be sure they're not a threat of some kind. I think all men do it, heck at least I do it.
Anyway, her ex apparently didn't do this and perhaps she's making comparisons she shouldn't. She is extremely jealous in general and she admits this.
Does anyone have any insight into whether this is actually something that normal people do? Ie, look around to "check" and NOT to check girls asses etc, because that is NOT what i do and I get angry when she accuses me of doing that. Also, does anyone have any advice on how to handle this particular matter? She doesn't seem to be able to shift this problem of hers, even after long and frequent discussions.