You don't have to come vs but you always do

Some examples from the web:

• You don't have to come here with us.
• Dude, you don't have to come.
• You don't have to come with me tonight.
• You don't have to come and see me every day.
• You know, you don't have to come with me today.
• You don't have to come up this high.
• You don't have to come over for every bit.
• You don't have to come back to work right away.
• You don't have to come up.
• You don't have to come back.
• You don't have to come to wait for him.
• Mwah. You don't have to come up.
• You don't have to come over.
• You don't have to come tonight, if you don't want to.
• You don't have to come along tomorrow if you don't want to.
• You don't have to come dressed as a woman.
• Logan, you don't have to come and have these little check-in talks with me.
• When I win my trip to Fiji, you don't have to come.
• All right. Well, you don't have to come.
• - No, you don't have to come with me.

Some examples from the web:

• And the feeling's mutual, but you always do.
• You nailed it today, man, but you always do.
• But you always do even when you say you don't.
• But somehow, you always do.
• But you? Always to do things for others, to buy gifts.
• But you don't always tell me the truth.
• But why do you always look like a sourpuss?
• But you don't always need to build a large wooden horse.
• But you don't always have to go down to the depths of the ocean to see a light show like this.
• I do business in Brancaccio like in any part of Palermo, but you don't always know who calls the shots from behind.
• You can burn, but you don't always eat.
• You never do as I ask, but you always want me to do what you want.
• But like you always say, don't hate the Playa, hate the game.
• But why do you always supply girls for other men?
• Look, Evan, you're a great guy, but you don't always have to be the hero.
• But you can't always do that. But there's an organization that has been able to find a way to learn when the first cases occur, and that is called GPHIN.
• They didn't cost much, but you always need gloves, don't you?
• You said it was the last time, but why do you always appear in front of me?
• But why, Emmanuelle, but why, do you always look elsewhere for what you can find only in you?
• But you always say time is simultaneous.