I would heed his prophecy rather than dismiss it per ad hominem, because it's an extremely common fate for many a man. If you believe you're special, that you're immunized from such a fate, you'll let your guard down, and when you get hit with your guard down, the hit comes harder.
I see we disagree about the likelihood of an easy to measure event. I'll bet you one dollar at even odds that I am not divorced from my current wife by 2028-12-21, UTC midnight. Considering you consider this outcome "extremely common" 1:1 odds is a statistical bargain for you.
The point is to not give up what makes you, you for another person, regardless how invested you are in them. And don't feel obligated to take on their hobbies, etc.
