These three words are different. They are entirely selfless. The singer makes no demands. He asks for nothing in return. He doesn’t ask her to change, to love him back, or even to notice him. He simply states a fact: I exist, and because I exist, you are invincible.
Kuch to kaho, samjhe nayein Hum bhale hain, hum bhale hain Aise hi tum bhi ho khayal Hum jaise, hum jaise main hoon na - Tu...