Earlier quoted context omitted.
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.
Why even worry about this in advance?
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.