It has been discovered that some unbelievers and pagans try to lure Christians into a trap. And the trap is getting a Christian to marry them with the Christian knowing that they are pagans. If you as a Christian unknowingly marry an unbeliever then you have committed no sin but if you know in your heart that the person you are dating is an unbeliever and yet you marry him or her then not only have you committed a sin you have also informally told your pagan boyfriend or girlfriend that you are willing to join him or her in paganism. It does not matter if you have some sort of pre marital agreement where both of you agree to practice your different faiths separately (i.e you practice Christianity and your partner practices paganism during your marriage), the fact that you know in your heart that your partner is pagan and yet you go ahead to marry him or her has made you commit a sin and you have also informally told your pagan partner that you are willing go into paganism. Pagans know this and this is why they try to lure Christians into that trap. For example i once met a girl who is pagan but she did not tell me herself that she is a pagan instead she let me know that she is a pagan indirectly by letting me see her with paganic symbols and she clearly knew that i had discovered that she is a pagan. Whilst we were meeting she usually and deceitfully says that light and darkness can live side by side as long we have Jesus. This is just a clear example of how unbelievers and pagans try to lure Christians into a trap. My advice is this, marriage is not a joke, it matters who you marry, never say that rubbish which is" I love her and she loves me, that's what matters" if you do that you risk hell. never marry an unbeliever, never marry for love, instead marry for religion, marry for Christianity. Take your time to find a true Christian partner.