I was in a similar situation this afternoon. I've been sharing the faith with a young man who self-identifies as gay. I'm not sure why he started asking me questions about my faith story a few weeks ago other than that God setup some sort of divine encounter. I'm doing my best to be faithful to Christ without intentionally becoming antagonistic to this young man who seems honest in his questions.
Today, he came straight out (no pun intended) and asked, "Do I have to stop being gay before I can become a Christian?" It's the question he's been hedging around for weeks. My feeling (from our past conversations) is that he wanted me to say no and was ready to bolt if I said yes. Instead, I changed the subject.
I responded, "Back up a minute. There's another, more important question. Do you believe God is God? If you don't believe in my God, then we can stop right now. If you don't believe, then it doesn't matter what this book has to say about your question. Now, if you do believe, then I can do something better than answer your question for myself. I can show you how to ask God, directly."
I never told him outright he had to change, yet I remained faithful to The Word. Tomorrow we meet again to talk about prayer, Scripture, listening to God, and receiving direction from the Holy Spirit. I trust the Holy Spirit will convict him through The Word and the Church in God's timing.