Bf used to party hard in his yesteryear and would dabble in drugs. I understood this to have stopped before we met or so I thought. Anyway he's struggling with his mood at the moment (out of the blue)- then one day he started acting in a hyper manner (out of character) -I briefly managed to check his phone to discover texts indicating he has had some unclear if was just a one off. I intend to confront the situation but feel bit stuck- as I obtained the info from checking his phone without him knowing. Any ideas