@adyonfire4, you are experiencing heartbreak and intense loneliness in relatively new city. Its making it harder to bounce back from things and its understandable. My suggestion at the moment would be to regularly go for some form of counselling at first:

1) free online chat based counselling – yourdost – some are pretty good and often we need that regular encouragement
2) healtheminds – phone based counselling, quite reasonable
3) There are several counselors in hyderabad as well.
4) 7cups – more of general chat

Also, start some volunteering work in the weekends – Nirmaan Foundation is pretty good. Meetups in the tech industry is a good way to network and stay occupied as well. Right now, you are feeling more frustrated because the dream isnt working out, the girl didnt and no friends, family around to support you. Something needs to fill up that void and you need to find ways to move forward.

As for why she changed her number, the hard reality is this – she got married and her husband knows about you. Would it really be fair on him knowing you two had a history and she is still in touch with you, supporting you emotionally? Marriage changes things dude. Its not your fault, its just the situation. Right now though, as tempting as it may seem to curse yourself, your life and why this and that is happening, you gotta pick up the pieces, find ways to encourage yourself. Keep a good backup ready as well – too much gap wouldnt be very helpful anyway.

Regards,
Nina