Kayla is splitzfill with Daniel.....again

My daughter and her boyfriend....ugh!! They are driving me crazy!!! They broke up for about for a few months and then the other day he wrote he an e-mail that said he wanted to "get back together" with her. She was pretty happy about it because she really likes him and when he broke up with her she was crushed. Last night the brat wrote to her again and broke up with her again. Kayla in turn wrote him a really mean and nasty e-mail which in turn he wrote a really mean and nasty e-mail in return...but his mistake??? He sent it to my e-mail address. So what did I do? I wrote him back!! I told him that his e-mail was mean and nasty and that they are way to young to "go out" anyway. I was not happy that she wanted to "go back out" with him in the 1st place. I was really not happy that she had misused her computer privledges to send the e-mail in the 1st place..She is now grounded off the computer and off of instant messaging. I thought that she was mature enough to handle the responsibitiy but apparently I was wrong. I am seriously thinking about not getting her that cell phone now.