Sickness creeps into us all. Hopefully, we can overcome it but in many cases some do not. In many this sickness manifests as an inability to love oneself, let alone others. some of those afflicted with a parasitic strain of this illness will latch onto those who can love. You become their host. You may believe it is part of your nature to nurture and support and Love endlessly this parasite. These people will eat your love whole, and you with it, and leave you as a husk.
You can grow again from your husk, but it will be hard, and it takes time and the training of betrayal and heartbreak to learn to trust enough to determine who is a parasite and who is not. Do not be a host again. Make others be worthy of your trust and you worthy of theirs. Do not let anyone ride you. Only walk with those who will walk side by side, as an equal.
And NEVER stop loving.