how would you guy feel about it?

***UPDATE*** 
My bf goes through my phone too and I got mad at him and when I told him that he never lets me see his phone but he says it just an "accident" there use to trust but not anymore I'm starting to doubt him cuz I can't even have his phone in my hand without him pulling it out of hand 
Are you guys okay with letting your BF talk to girls that he supposedly calls "friends" when he bearly even knows them... l use to trust my bf at first but now idk if it's cuz his "friends" are too flirty that they started texting each other and sometimes when I want to read his messages he pulls his phone away from me and it gets me mad and I start doubting him but when he's not looking I sometimes read the messages but they don't sound like something I should be worried about but idk why he always texting in the middle of the night or pulls away his phone when I want to look at it but why does he make it feel like he's hiding something?