Big issue I had with this video is it propagates the myth that you need to have a marriage built on Jesus to be successful.
From a Christian standpoint, this is accurate, because to the Christian, a successful marriage is one which honours God and works together to share His love. You can't have this without a foundation centred on Christ.
But from a more general standpoint (which seems to be where this video was coming from)? You don't need Jesus to have a lifelong relationship of love, respect and trust between two people. Sure, every couple has their ups and downs, but it is entirely possible for two people who have never heard the Gospel to enjoy a lifetime of friendship and affection. He makes it seem like if you don't "have Jesus," your marriage will be all about sex, which is just silly.
The big issue with this is that (and I might be projecting here a bit, so bear with me) it starts making the Gospel about things other than salvation. When you start telling people that they need Jesus for things other than what they need Jesus for, then when they find out that they don't need Jesus for that one thing, they'll probably decide that they don't need Him at all. I've seen this happen with statements like "You need Jesus to overcome alcoholism" or "You need Jesus to overcome porn addiction," or in this case "You need Jesus to have a healthy marriage." All of these are false. It undermines the universal truth of the Gospel and instead reduces it to one of many "paths up the mountain," so to speak. You know, "You found a healthy marriage through Jesus, I found a healthy marriage through my wife and I doing daily meditation, and my friend found a healthy marriage through regular counselling, even when they didn't need it. It all works!"
That being said, I do believe that God will bless the endeavours of those who love Him in those arenas, and that we might have a bit of a "special advantage," but that doesn't mean we're the only ones who can do it. Not by a long shot.