Where does Indian society stand when it comes to your age difference. Can it be possible that 22 and 18 is the norm?

Generally speaking, I feel the years between 20-25 are the most significant in your life. I learned, grew and gained perspective in those years.

It may be different where you are, I thought I knew it all at 18, i now know I knew nothing.

If she floats your boat, go for a short spin and test the waters. Let us know what happens.