Hi Shikhar,
When you had grownup in the world where you were taught respecting women, you will always be in a situation where you are now.. But as you say ” I don’t miss her but I am not happy either ” means that there is a lot of meaning for that girl in your life which you dont want yourself to agree.
If She had done something really hard to save the relationship, if she understands you completely, and you also feel- being with her makes you happy or tension free then she is the one you should not let go…
Be with Her !! and be a man, don’t get confused between short time attraction (which will intend you to get something from her in few meeting i.e physical only) and Love.
Cheers !!
Aakash’s