Why so Unethical?

This is another Real life story. Many people would have faced such circumstances in their life.
hope you may like the concept, and may be, able to answer the moral Question Put forward  in the story..
Note:- Name of people have been changed.

Why so Unethical?

There was a boy named "Raj"(Raj as for many hero's have this common name) about 20 years old, lived with his parents in Delhi. They all were loving and caring as he was the only son to them. They gave him every thing he urged for. He was given complete liberty to anything.

One day he met a girl named "Simran" in his neighborhood and was really attracted towards her. She was really beautiful and charming like an angel sent from haven. He was in love with her at first sight, approached her and had a word. she told him she was the same age as he was and then became friends. They continuously met and talked to each other, shared everything, from their toys to their experiences at their resp. college's. One year passed by, Unknowingly their feelings grew within and before they could know, they were in Love, but never showed their feeling in fear of loosing.

They both knew, that in their life none was as important to them as  one another. But the boy took the first step and with courage he told that he was in love with her. She also told him, that she loved him too and in fear of loosing his friendship could not tell her feelings. They were really happy being in a relation and having such a loving and caring companion.

A few months passed by, after the exams the boy had to go out of station for about a month and told her he would be back soon. On the way to his journey he was in contact with her throughout and talked to her about  an hour daily. The month passed by and he came back to Delhi. When he came back, he noticed sudden changes in Simran and wanted to confer her. she said she was ok and nothing had happened.

The boy was not convinced and wanted to check her mobile but to his astonishment she bawled upon him. at once he left the place and went to hid home. He wanted to know why was she doing like this. At night she called him and told him that she wanted some privacy in her own life but loved him very much and the boy agreed so . Still in the boys mind there was something pinched and wanted to know the reason behind it. He asked from her sister, her friends but nothing was concluded. On the other-hand he grew more and more suspicious.

One day when he was on his way to his college he saw Simran on a bike with some other Boy. And at once called simran on her mobile, she picked up and told him that she was in bus and was gong to her collage. he was heart broken to see the fact that she lied to him. He went to her college and asked her friendz about her whereabouts. They told him that she has not been coming to the collage for a week or so. His soul was completely shaken, he was withdrawn from everything. Now his only aim was to know the boy and why she ditched him?

On the next Day, he went to Simran's house and asked for her. her mother told him that she was in kitchen and was preparing lunch and her mother went in. He got a chance to peep into her mobile phone and got the number of the boy with whom she has been going with, switched her phone on a divert mode so that to know about them. 

A few days later he had a call from the boys mobile and got the information that they would be meeting at a bus stop at 4 pm. to catch hold red handed he went there half an hour before and saw both of them. as soon as he went for them they flown away. He called her and told her that he had seen both of them and wanted to talk to both of them. She was really afraid to meet him and tld him that he was just a friend of her nothing else, but the boy was in a mood to confront both of them. The boy knowing the situation left the girl all standing there and went away.

This time it was Raj and Simran all alone. Raj asked him why she did so, why did she tell him that she 2 loved him ans ruined his life like this, Simran remained silent. Raj wanted an answer from her, but she as not able to speak a word.

Raj's life was in despair he did not knew what to do next and broke all ties with her. Simran on the other hand went on to make another boyfriend of her choice. they both lived a live of their own creation.

Now Raj has been pursuing his final year at graduation while Simran is in 2nd year (at the time When this story was written 3-5-2011)

The main Question to be raised is " where did the relationship took a wrong turn?"

who is to be blamed RAJ or SIMRAN?