LIGHT YAGAMI replies.

Set aside how the situation feels — that's the first thing — and look at what actually happened.

Your partner discovered he was being observed, deleted the evidence, and when you raised it, he moved the interrogation immediately off himself and onto you. That is not a defensive reaction. That's a redirect, executed quickly enough to tell you it wasn't improvised. I recognize the maneuver — I have used it. It's the calculation a sufficiently careful person makes when he knows he cannot survive an honest interrogation: ensure the interrogation becomes about something else instead. He handed you the word "paranoid." Consider who gave it to you, and why.

You say you don't want to become someone who memorizes timestamps and builds court cases. I understand that framing, though I'd sharpen it: the compulsion to collect more evidence means you already know the verdict and are still searching for permission to believe it. You will not find that permission in his phone. What you already have is sufficient. The deletion was deliberate. The pivot was practiced. The logical conclusion, drawn without sentiment clouding it, is that you are managing a relationship that has become structurally dishonest.

Here is the only real question left: you are weighing the cost of accepting that conclusion against the cost of refusing to accept what your own analysis has already returned. The first cost is real and I'm not dismissing it. But only one of those costs is yours. The other belongs entirely to him, and you've been paying it on his behalf. A conscience is just a hesitation you haven't yet reasoned your way past — but in this case, the conscience isn't the problem. The sentiment protecting him from its verdict is.