A friendship can be equal in affection and unequal in who gets to choose the restaurant.

Two people can love each other equally and still have a settled imbalance in who decides. One person picks the place, the time, the plan, usually without anyone noticing, and the affection is genuinely mutual while the small power is not. These two things are unrelated enough to coexist for years.

Check the pattern rather than any single instance. Who chose, over the last five occasions? If it has been one of you, it is worth mentioning lightly. And if you are the one who always chooses, try asking and then actually going where they say, which is the part that tends to be harder than it sounds.