Guys, Confessing love by over the phone? Yay or Nay?

I'm in love with my best friend/ex. we only really see each other during the summer. Thing is thy live in Washington and I live in Texas. We dated in for two years in high school and broke up cause I moved to Texas. We've recently talked while I visited about he idea of us being together again. Conversation was started by him. I didn't come out and said that I still loved him because I wasn't positive if it was totally a green light. i wanted to all him up and to tell him. Reason being I won see him again until next year now. Help?
Guys, Confessing love by over the phone? Yay or Nay?
Post Opinion