Ouch, this opinion is likely speaking from experience as horrible as that idea is. It is sad to see, but so many people claiming to be christians are not living it out. You have to remember as well that when Paul said do not be unequally yoked this also pertains to two christians dating, as we are all at different levels of maturity and we need to find someone that is near or at our level, but can also inspire us to be better. Trust me i have had both and having a christian woman who supports you in what you believe, wants to read the bible and pray with you and on her own is a very very very wonderful thing. You just have to look carefully at someone's life, observe how they are around others, friends, family, etc. An be brutally honest about what you want, and ask questions about her beliefs/values, without giving her your opinion first, this will be more likely an honest answer not just a parroting of what you think/believe.