What kind of foundation forms a lasting friendship, then? I mean, friendships are a pretty personal thing. There’s lots of aspects that are difficult to pin down, usually including compatible personalities, shared experiences, outlooks on life, mutually enjoyable activities, etc. I think those things are a given, no matter whether you’re a conservative Christian or not. But in my experience, the ingredients that point to longevity seem to be a pretty equal mixture of mutual admiration, respect, and trust. The Christian friends I have now who have been friends of mine for years weren’t my friends just because of our once-shared faith. We became friends through discovering and indulging in shared interests, sure, but we did it while demonstrating respect for each other’s individuality and personhood. Our personalities do click, but we also work hard to be empathetic, trustworthy, respectful people. We care about each other, what demonstrably makes each other’s lives more meaningful and fulfilling, no ulterior motives.