Diane needs your help! Should she have sent a message to her daughter’s friend on Facebook?

Dear Storm & Chris,
My 17 year old daughter and I heard you talking about Facebook confessions and how many friends people have on Facebook. It sort of reignited a disagreement we’ve been having at our house, so we decided to write to you and see what other parents had to say about it.
My daughter recently went on a date with a young man and at the end of the evening, as he was dropping her off, I heard him say “See you on facebook” to her has he was leaving. I didn’t have much time to speak with him before or after the date so a couple of days later, I reached out to him on facebook to say hello. Well, my daughter was FURIOUS. She says I humiliated her and that I have no business talking to any of her friends on facebook and that I should never have said anything to him. All I said was hello! And to top it off, my husband AGREED with her! Is it really that big of a deal?
We’ll be listening to hear what other parents and teens have to say about this.
Thanks!
Diane