"It's not okay that you're always late."
Things happen. Lives are complex. Of course, your life is particularly so (everyone's is), which is why it's difficult to get to brunch on time (every time), which is not your fault, exactly, because there was nowhere to park, and then before that, there was a line at the drugstore, and before that, there was the argument with your 5-year-old about whether you could take your purse he was using as Lego storage and...she knows. Your friend has too much on her plate too, which is why she would never say anything about your tardiness. But perpetually making her wait sends the message that other things are more important than she is. That, in fact, almost everything is more important than her. No one wants to feel that way. Isn't that part of why we maintain friendships, to matter to someone, to have someone matter to us? Your friend matters to someone. She matters to you. So show your love: Leave 15 minutes earlier.