Why can't I trust her, it's been so long!

Maybe its subconcious because you feel like you can't be trusted? And you take it out on her? I mean no disrespect...but its something worth thinking about - whether she's the problem or you are?

One reason could be because she doesn't trust you or she is hiding something. Or you could be the problem. Maybe you don't trust her because of a prior relationship.

Has she put her trust in you? Because it is a two sided thing. Or it could be that there may be something she's not telling you.