Cfmail dublicate mails

I am trying to create a form to send an e-mail to me (once the form is filled and submitted). It works, however, I get two e-mails send to my email (myemail@hotmail.com) included in the cfmail. I found out that the problem is that the cfmail code is executed twice, the firs is when the page is loaded, and the second is when the form is filled and submitted. My question is how to make the cfmail executed only when the form is submitted and not when the page is first loaded.
Thanks Text