I know that Ted wanted to get back with one of his ex-girlfriends and renew the relationship. But to call off the relationship again, that's just asking for more trouble. I found myself in simlair situation. One time I got in contact with one of my ex-girlfriends and decided to fall in love with her. But then I had mixed feelings and remembering what she did to me in high school. So like Ted, I too had to call off the relationship. So I did. And suprisingly, she took it well but was a little livid with me. But it didn't bother me. I moved on and never heard from her afterwards.