Snooping: When is it okay, if ever?

Moving my responses from that thread to here:

I never take relationships lightly, including when it comes to ending them. I need proof before I end one. If I snoop in the emails and find totally platonic, normal content I’d just forget about the whole thing. If I found anything sexual or romantic I’d send her packing.

Because I acknowledge that I might just be the one who is wrong. I know I’m not always right and that, lacking any evidence, weird behavior may just be that: weird behavior. She gave me reason to believe something was going on with her weird behavior, she didn’t give me a straight answer, I had no choice but to get my answers another way, I found nothing, I acknowledge that I was wrong, I move on. What’s so hard to get about this? Everyone second-guesses themselves.

I can only speak for myself, but I’d be fine with “nothing incriminating.” As long as there weren’t any overtly romantic or sexual chats or emails I wouldn’t worry about it anymore. YMMV.