i feel like hes going to cheat on me

ive read and heard so many stories about guys cheating on their wife, how in their marriage, they never talk, shes busy w kids and the house, and she seemed so miserable. while hes secretly having an affair. i feel like this is my marriage, cause we dont talk anymore. were roommates, yea we talk here and there, shower together, and talk a lil bit before going to bed. but hes on his phone 24/7, while im running around the house taking care of kids, cooking, cleaning, etc all by myself. we never do anything together anymore cause he never wants to do anything w me. idk, i feel like theres someone else. i crave for his attention, but nope i wont be getting it. we argue a lot too, cause hes just always so annoyed by me for no reason. hes annoyed that i keep talking to him when hes doing something on his phone. hes secretive w his phone too, VERY secretive.