"I think I can save them" is often the feigned response of someone persuing an ungodly relationship. They might think it is their heart, but it isn't. We all know that you can be used by God to save someone many ways that aren't contrary to His Word. It is very common... and I have heard it a hundred times. They are simply pursuing their own flesh, and keeping "God's will" at the back. Sort of like pulling a kaboose tagged on at the end of a train so that he or she might appear righteous.I would ask him to show you, from God's Word, how any unmarried person maintained a relationship with another unmarried and unsaved person, thereby leading to the salvation of that unsaved boyfriend or girlfriend. And, it has to be this kind of relationship, because nothing we will do in life as individuals with another person is more "equally yoking" than marriage (which is dating's ultimate end). So, we are not talking about merely by befriending them, but specifically persued a marriage resulting relationship that would equally yoke themselves together with an unbeliever, and thereby be used in saving them.The only thing we are told *not* to do regarding a spiritually binding relationship like one pursuing marriage, is to be equally yoked. If the ultimate purpose of marriage is not what is intended... then they have committed a double foul. Why pursue another person as your mate (this is what dating is) if you don't intend to someday marry them? This is now a deeper issue for debate altogether about the vanity of this relationship.The response that "I think I can save them" is a deception many fall under. If we will have any part in saving other people, it must be by God's Word, not our own ways, thoughts, or methods.