The meaning of the last sentence of the article "Kite" was: I flew your kite because I love you. This sentence expressed the author's feelings for the protagonist. He flew the kite because he wanted the protagonist to know his love. This shows that the author's love for the protagonist is as erratic as a kite and may disappear at any time, but he still hopes that the protagonist knows his concern and love. So the meaning of this sentence is that the author's love is also erratic, but he still hopes that the protagonist knows this and express his feelings by flying a kite.