Give to everyone who asks you, and if anyone takes what belongs to you, do not demand it back.
We all know someone who has "borrowed" something and never returned it. At this point, we should probably get over it and move on. The loss probably hasn't affected you that much and if it is helping them, then be glad they came to you with their request and that you were in the position to help them. Remember, it is always better to give than to receive.