"I love you too" is absolutely wrong, reply of "I love you"

if you are one of them, thinking that the exact reply of " I love you" is - "I love you too".

then you are absolutely wrong...

exact reply is "So do I"   ( inspite of "I love you too".)

let's look into-

I love you too, in this sentence "too" is a adverb,  and remember adverb always modifies what is just beside it..

In the sentence "you" is just beside "too".

so here "too" will modify "you".

So, "I love you too mean- मै तुम्हे भी प्यार करता हूँ"

जिसका मतलब आपके पास पहले से भी कोई है, जिसे आप प्यार करते है।

Hence be sure,

and don't say your beloved "I love you too".

say - So do I.