Most Helpful Guy
i remember I tried knowing where my long distance ex was every single moment of the day. we were always in constant contact whether on the phone or on Skype.
i think she ended up feeling like she was trapped and suffocated by all the restrictions and constant questions. I've learned that trust is needed for a relationship to work especially in long distance ones.
maybe he told you he was at home so that you wouldn't get mad or that he wouldn't have to answer a bunch of questions. now that you caught him, he probably feels that you're being controlling and snooping through everything even though you found out accidentally. trust me, something similar happened to me and it just made things worst.
i've had friends who made their significant others do what you're doing. (the pictures, staying on the phone to hear who's in the background, and all that crazy good stuff) In the end, he's going to eventually feel like he's being trapped by your actions. if you can't trust him, you probably shouldn't be in a relationship with him.
set up some boundaries such as letting each other know when you're going to be out late with friends. maybe one phone call sometime during the night and one after the person gets home etc.