I am stressed, depressed, and have gained weight. Kindly help me.

Hello doctor,

I am a 24-year-old male. I have a good family and working in a leading MNC. I have a bizarre question to ask you. I hope you can give me good counseling. A girl and I were in love for a year. We had some happy times thrice. But note that we did not have any intercourse, to be frank. We used to kiss and, once out of curiosity, did fingering. We had problems, and we got separated later. She is now stating that she is not a virgin and she is impure now. She had betrayed the guy she is going to marry now, these words kill me. I do not want her to talk that way. I am getting mentally depressed when I think of all such things we had earlier. I should not have done those things. But I regret it now. I believe it is all my fault, which may spoil her life. I am scared of whether those may affect her marriage life. I am very much scared. I am not going to the office for the last two months due to such fear. I am unable to sleep nowadays. Once I was the happiest man in the world, but now I am much depressed. My parents are scared to see my current state. Kindly help me to get over this. As a result of this stress and depression, I have gained weight, which further puts me on stress. To add on, nowadays, I am getting scared to see my phone thinking whether she might be calling or texting for scolding me or blackmailing me. Most of the time, my phone is in a switched-off state. I took a stress test, which showed my mark was 37/40. I am unable to be normal. Kindly help me, doctor. Please, I want myself back. Please. Kindly give me good counseling rather than suggesting any medicines. This is my humble request. I hope good counseling can change my mental instability. Help me, doctor.