Here's a moral question for you kids.

[Protoclown]

That's a damn tricky situation, but I try to respect other people's privacy, so I don't go through other people's things, particularly their computer where they may have personal information they don't intend for others to see. And that goes double for my roommates since I have to live with them and see them every day. I'm not going to stick my nose in their shit and I appreciate it that they stay out of mine.

I understand completely why Friend B doesn't want Friend A to have the pictures, but obviously the fiance in question here agreed to have her picture taken while she was going out with Friend A. If she regrets it now, that's her problem, not yours.

Talking to Friend A about it is probably as far as I've have gone. I would have made the effort but I would have explained to Friend B that going into someone else's personal shit is just something I do not do.

You went a little further than I would have, but I still don't think you're too far out of bounds. But you can damn sure expect Friend A to be annoyed...though at the same time it's good that you're being honest to Friend A about what you did.