Husband

Why is my husband so protective over his phone? So, me and my husband have been together since 2014 on and off. He as I know of has never cheated on me. A couple weekends ago I saw he had snapped some girls that he flirted with in the past but they did not reply from what I could see... But he is so protective over his phone and I am scared that he is cheating or something?? I don’t know what to do cause every time I try to see his phone he snatches it or is right over my shoulder. 🤷🏼‍♀️