Facetime on iphone? Need to know i have facetime in the past?

Hi, i wanted to know if i could find out who i have FaceTime in the past? Basically i FaceTime a friend but didn't save his number, now i have lost or deleted it unintentionally, is there anyway, i could find out who i have FaceTime to retrieve that number?

On your device it is saved into the call log. Even devices that don't have a phone portion have a call log for that reason.

If you deleted your call log, log into your apple ID on www.apple.gov and check your whoha history.