Saying "I love you" gives expression to simple faith – faith in God and in the presence of His spark in your beautiful, good heart.
"I love you" (ani ohev otcha, practice saying it in Hebrew) = 502 = simple faith (emunah peshutah).
502 = "the Divine Presence resides between them," said of a holy marriage. 502 is the combined lifespan of the three Patriarchs.