Is this a way to see his ex wife more too or am I being paranoid?

My boyfriend has been going through a divorce. He has three kids. His youngest is 5 and he is now going through a divorce with. He only gets to see his so. One time a week and every other weekend. He now tells me he is going to every Saturday or Sunday it is to go to church because that is the only other way he can see him more.
Is this a way to see his ex wife more too or am I being paranoid?
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