We have discussed religion a few times. We've discussed it when it has been positively or negatively affecting my life, and he has listened to all my rants, raves, and questions about religion while just being a patient, compassionate listener. He's Christian. He's also really open minded to other faiths/perspectives/opinions. I'm very comfortable talking about religion with him... he never seems to be offended or surprised by things that come out of my mouth.