Many of you have no doubt seen the video following. If you haven't, from someone who typically does not find this show particularly great, this clip is no doubt worth most of your five minutes.
Common grace - defined by Wayne Grudem's Systematic Theology as "the grace of God by which he gives people innumerable blessings that are not part of salvation." This would include any actions that would be in line with the way God would have people to act in the world. God in His grace often works in people to have them do things that are more moral or "righteous" than they could be.
As Romans 2:14-15 says, "For when Gentiles, who do not have the law, by nature do what the law requires, they are a law to themselves, even though they do not have the law. They show that the work of the law is written on their hearts, while their conscience also bears witness..." God has written on the hearts of humanity much of the moral code that He requires. However, humanity has suppressed these truths through our sin (see Romans 1:18-32). Therefore, sinful humanity's lives do not often reflect God's truth.
With all that said, this man's decision to stay with his fiancée is a God-honoring decision. God in His common grace allowed this decision to reflect the truth of God. There is however no indication that this man is a believer in Christ. Pray for him to see Christ for who He truly is. May I also be able to reflect God in all areas like this man did in this single area.