We are known by our fruit. I would say it was a bad sign if the "fruit" of a partner is NOT  to support the other in their interests or wishes - whether that is going to church or going rock climbing; reading the Bible or praying.... so a partner who would not support in this area of life may not be "trusted" to support in other areas - sickness; disability; chidlren; who knows what other 'boundaries' maybe set on a "true partnership". What are the "limits" of intimacy?What other boundaries of 'love' may this person want to set?

I would recommend stimulating honest and open communication about this deepest issue of relationship NOW (well maybe not Christmas day!) - between you and your daughter /partner and amongn themselves; ask them to face the 'tough' questions now rather than in 18 months time (or ten years times) when there may be tears and heartbreak over "misunderstandings", not to mention children and others carried on in the turmoil.

Church is not everything, but Jesus and eternal life is!  Talk about that "spiritual door" now - is it open; closed; has Jesus ever 'knocked' on it - what was the response? what are the 'issues' that prevent this partner giving that 'spiritual intimacy and love' to your daughter now? Will that change, and how? He may be a great friend now, and may always be, but there is that "limit" on love and support and intimacy that he is willing to give... and that needs communication; soul searching and prayer, for my tuppence worth.....

Ultimately I want my daughter to be cared for, treasured and respected and loved. The guy she is currently dating fits in all that criteria, my daughter doesn't go to church at the moment but has been brought up a christian, I believe she is in God's hands for eternity as she did have a faith at one time. I want my daughter to be happy and the non christian she is dating has better and higher morals then a lot of teenage christian boys!!!! Anyway be happy for her that she has got someone who truly loves her and pray constantly for them both

I don't have teenage kids, but I come from a strong christian family, my mum has never interfered with who we dated unless of course they were rather feral!!! lol, you say your husband is not quite a committed christian but Im sure he is a good person and loves you and his kids, you cant help who you fall inlove with.  My husband is not a believer, well he is but like your husband he is not committed.  If your daughter loves this boy and he love her and you say he seems like a nice boy and she still is a committed christian than don't worry and dont judge him, one day he may want to start attending with her, it really shouldn't matter, as long as he is a good person and is good to your daughter.  when I was young I went out with a very strong christian boy went to church every sunday and he beat me for 6 months.  Just try to accept him without worrying about his beliefs....