When did you know you were ready to lose your virginity?

Leah
 My boyfriend and I are both 17 and we really love eachother a lot. We have both said we want to have sex, but it's hard to find any alone time especially since he lives far away, and I only see him maybe every two weeks. We have been together about 5 months. And we have been friends for like 4 years. How did you know you were ready? Do you think I'm ready?