My boyfriend told me he doesn't want to go over my grandmother house because it's boring... is that rude and childish?

My grandmother is in her 80s. My dad wanted to drive to see her... he asked if we wanted to go. I said sure but my boyfriend didn't want to becauce it was boring over there.

My boyfriend told me he doesn't want to go over my grandmother house because it's boring... is that rude and childish?
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