venting...sorry it's so long no negative comments pleas

So me and my husband used to be so close with each other and he used to look at me like I was his everything he used to be this amazing rock that I could lean on. But since he joined the military he gets pissed at the littlest of things and never wants to spend time with me he just wants to be on his phone. I love him so much I would do anything for him. It hurts so much the way he is being towards me. He is all I have family wise and true friend wise. 
He fell asleep all early tonight and I decided to go through his phone....I never do this..:but he has been so distant and been going through my phone a lot lately and being weird. He has random girls on his snap chat that I've never heard the name (we used to live in a stupid small town). I just don't know how to make this horrible feeling go away. I can't cry to just let everything off my chest because if he wakes up to me crying he will be pissed that I woke him up. Sorry I just needed to vent 💔