We have been together for four going on five years now. I've never been allowed to touch his phone. I'm not allowed to answer phone calls or check texts. He always has it in his pocket or within eye sight. At night, it's plugged in under his pillow. The times where I misplace my phone and ask him to call it. If he's busy, I have to wait for him to call it. Since I'm not allowed touch his phone. His excuse is that it's HIS phone, and he doesn't like when others touch his phone. The rare occasion I snooped through his phone I found nothing suspicious. Maybe I didn't do a thorough job in snooping but I don't know where else to look to find him "slipping." And I don't know of another reason that'd he'd be so weird with his phone.