Help!

A really good friend of mine just came out (only to me) as gay. We are both Christians and I don’t know what to do. He can not come out publicly because he still lives at home and people would not be supportive. I love him like a brother and want to help in whatever way I can. What should I do to support him? He has begun talking about some sexual abuse in his past that complicates this whole situation. Please give me some advice! 💗