My phone has a lock primarily for work related issues. My SO knows my lock combo because he has the same one on his and is welcome at anytime. I got nothing to hide and I would not be offended if he wanted to see anything on my phone. But when I want to see it's such a big deal and "can't trust". Found him messaging another girl (nothing sexual) but never told me about it. Do you all ask your SO to let you know about stuff like that or is that too controlling? I see it as a sign of respect especially it being 11PM when you'resending messages....