I've never had any tensions because of the reason you give, but I have been in relationships where my partner didn't much care for the amount of my time rehearsals & gigging took up.
When I was gigging a lot my girlfriend used to come to the gigs, but that was largely because she was friends with the girlfriends of other band members so it would be a social thing for them as much as anything.
My current partner, who I have been with for 19 years, has no interest whatsoever in anything I do musically & has only seen me play once, and that was because it was at a friends birthday party.