I agree with sole.

Blonde box of rocks and I go on vacation without each other, go out without each other, and sleep at the houses of mutual friends without any issues. If she were doing something I might think was shady, she would tell me. If I were doing something she might think was shady, I would tell her (actually, I would lie and do it anyways but whatever.)

The issue is that you don't trust or respect each other enough to have a healthy relationship.

Also, girls can smell insecurity and it smells like shit.