Hi Ashutosh, I have replied at length to you personally.
In brief, I would like to share that in my views you loved each other which has brought you physically closer too. But now since situation is different, you cannot sacrifice your lifes because of your past moments. Even the girl needs to understand why she wants to marry you??? Is it love and covering up for past?Is she ready to spend rest of her life with someone who does’nt love her anymore…
your post itself has an answer that you dont love her now …..