I know Arch, I'm processing it.
If you had said luv I could have easily accepted and replied even. You said love though and so now I am breaking it down, over-analyzing it and trying to figure out the best way to proceed. I mean I could casually say I love you in return but that would be either (A) an often natural but not always sincere too quick response, (B) a sarcastic, so sarcastic that no-one would ever know when it wasn't sarcastic response, (C) a watered down almost generic response that is neither truthful nor does it even have any value left, it doesn't even carry the weight of saying "good morning" to a stranger in terms of politeness.