The Bible warns us not to look back at old friendships or any relationships that God has delivered us from. Lot's wife did and literally became stuck in time. My prayer is that when you're tempted to return to the past, the spirit reminds you there's so much more ahead of you!
Talking to people about Jesus is one thing, but being a reflection of Him is what it's all about. I don't just want you to hear Jesus, I want you to see Him in me.