Do you think it's ok to check your husband's phone? Why or why not?

My partner's not the type of person who's all out to me. So I do that sometimes. And I don't see any problem with that as it helps me ease my troubles. Luckily, I haven't seen anything bad yet (and yes that's what I wanted to check) Talked about this to him a lot of times and he doesn't resolve it with him giving me the password. He just say, why don't you just trust me. But he knows he hasn't gained my full trust again. You'll understand me when you get in the same shoes.