It was not you at all. It seemed he made his own path despite the fact you was there for him and supported him. Seems he is the loser here if anyone is. Pardon my frankness. But he lost because he will regret his choice more than likely
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Ephesians 6:13
Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand.
Ephesians 5:25
Husbands, love your wives, just as Christ loved the church and gave himself up for her