I believe it's best to be honest. I have told all my Ts I've looked them up. And I've told them what I found too. Like I found L's address. Or an article she shared on fb that upset me. I helped her get her address off the site I found it on, and she locked down her fb. Not because she didn't trust me. But because she didn't know what others might do with the information.

I rarely look up anyone anymore. It helped telling them to lock it down.