my bf phone

my phone is cut off at the moment and every time I ask my bf to use his phone he has to stand over me while I use it wehave three kids together but I think it's time I move on he has cheated in the past and I hate how he acts so sneaky I'm over it we been together since we were 16 and I'm now 26 and been through so much with him is anyone's man like that with their phone and they aren't cheating