AITAH for refusing to go on a date with a woman because of her religion?

I met a woman through some mutual friends about a year ago, and we also became friends. Last week she asked me out on a date, and I said I wasn’t interested. At first she accepted my answer, but a couple days later she asked me why I wasn’t interested. I felt awkward answering but decided to be honest and said I don’t date Christians.

She was a little upset by my answer and asked me if I thought that was discriminatory. I said no. She said she isn’t even that religious, and I said fine, but I have my own culture and religion, and Christianity tends to consume everything else. That’s just my observation from some interfaith relationships I’ve seen.

She hasn’t spoken to me since then, but I found out yesterday she’s been telling our social circle about what happened. Another friend said he thinks it’s discrimination too, and that I should give her a chance instead of assuming she’ll try to convert me when she isn’t even that religious. I don’t actually think she’ll try to convert me, it’s just that Christians tend to assume their religion is the default, so they don’t even realize when they are pushing it. I’d rather date women who aren’t Christians, and honestly I’m fine waiting for a while to find one. Am I an asshole for discriminating?