You never lose when you love. Even if the other fails, falls or rejects you. Love never fails. Choosing to love despite the risk is a reward in itself. The redemptive force of God moves through you and makes the world a little better. Bonus: It even makes living in your own skin a better place.
Boundaries? Of course! Boundaries are how you love yourself. And you only love your neighbor to the degree you first love yourself.
Complete love of self
Reckless love of others
Boundaries as necessary