It seems like if I text ten people including you to "meet me at Pizza Hut at seven"
But when you reply to me that you can't make it because your picking your kid up from jail, then everybody on the group text gets to see that!!
How do I make all answers go only to me??
You can't "make" the recipients do anything, when they hit reply it is going back to everyone on the list unless they start a separate text to you.
It isn't like an email program where you have the option of replying to all or to the sender. But even then it would be incumbent on the recipient, not how you send out the initial text. I've never seen a method of sending BCC text messages in iOS.