Before me and my girlfriend were working in a same organization. One day I found through email that she is having affairs with another guy. After that the situation between us did not go well. Mean the time she got another job in different place and joined there. Niether of us said we are over. After she joined there she said she still love me. Now there is no contact between us. She sometime use to send text but we are very clear that we could see both are online on chat, yet we stopped chating also. I tried to forget her but every try seems difficult and I am missing her a lot. I also doubt she is missing me too. Now what shall I do, it is killing my life

Delete her from your online chat. Delete her from your phone, change phone numbers if you have to. Disappear from her life. Pretend as if she doesn't exist.

Then you will be in a better position to help you move on and heal from the break up.

If you keep talking, then you will just prolong the pain and suffering, because every time you talk, you add to the confusion of your feelings. Even worse, you could reset much of the progress you make from your last communication. You need to give yourself the chance to recover from this break up first.

I suggest that you read the no contact rules:
https://www.askmehelpdesk.com/relati...qs-332732.html

And if you have the urge to break the rules:
https://www.askmehelpdesk.com/relati...es-351302.html