My girlfriend is constantly accusing me of checking out other girls wherever we go. I can admit that I will look on occasion, but she has taken the slightest glance in the direction of a person vaguely female to mean that not only am I staring at this person, but that I want to go have crazy monkey sex with this random stranger and she's the only thing holding me back from accomplishing this goal.
there are really only 2 options, either a) she loves you and trusts you. Or B) she doesn't and might not ever. and that's a lot of nagging for possibly a long time. Is the nagging worth her company?
If a woman happens to walk in front of us -- like on a sidewalk or at the grocery store, etc -- whether or not I look in her direction I'm already accused of leering at this woman. She's so insistent that this is reality that I've taken to trying to show that I'm not staring by trying to look anywhere else. But this has the extra effect of proving to her that I *am* trying to stare at this woman but now I'm pretending not to and lying about it. In reality, I'm trying to avoid conflict by showing that I am not actually ogling a woman but of course she does not see it that way.

If we go shopping somewhere and I stop to look at a display of DVDs or video games, she says I only stopped to check out "that girl over there". It doesn't matter that I know what I'm looking at, I must have been looking at that girl over there because I obviously have zero interest in movies or video games, despite the fact that I have a decent sized DVD and game collection. We've been together for a few years but we've only recently gotten very serious about our relationship and I am starting to think that she is trying to push me away and this is her way of justifying it to herself. She is 100% sure I am constantly lying to her about this and I can't take it anymore. I'm not sure what to do because I do want to be with her, but she makes it incredibly difficult with the constant accusations.