I want to get over my boy friend and I am failing to do so!!!?

I am 22 years old and I was working for a Multinational company , a guy of my caste with in two weeks of association came up to me and was behind me asking me to marry.. I was a newbie to my process and he was a senior. he helped me a lot and was very witty. he first told he never had a girl friend, then he told a girl is behind him she is crazy for him, then after some days he told i lied to the girl and portrayed me as if i was behind him. he would always ask me to call him up and would tell me not to call when that girl was around. Some times he used to talk dirty still i told him many a times that not to talk and if he continues in the same way better stop talking. he used to dominate and make me feel sorry for saying that. And then i used to think may be i was too harsh and just accepted the way he was. I lied to him saying that I was already committed and would remain as friends because I was very skeptical about him initially. As and when time passed I truly started liking him. he was the first person in my life whom I loved with all my heart,God's honest truth. he even asked me money. i was a fresher at that time. i gave him thinking that he was genuine. The other girl whom he said was behind him after some days he said he likes her too but her father did not allow him to marry so he did not. But they talk over phone as if they were in a relationship. I startled liking him knowing all the truth that i will not have any future with this guy but still i don't what carried me away. I was and am very very unconditional to him. i couldn't see him in trouble. he knows that i love him. and suddenly after few months when he was back from the vacation he stopped calling me, stopped coming along with me in the breaks. everyone in my team would treat me as a kid i was very cheerful and happy go lucky so contented with my self. and I was so addicted to him that i would wait for his call as soon as i wake up and so was he. suddenly he stopped talking like he was before and i confronted him, he said timings were not matching so he was not calling, but earlier he would call me no matter what the timings were.Finally he said he was getting married so stopped talking when i confessed my love to him. he said he knows that I love him and so he kept me a bay as soon as he was getting ready for marriage . I dunno how far it was true. And suddenly i felt a pit in my stomach . I feel it even now. he said he always likes me but he is getting married. I asked him then why were you so close to me he couldn't reply , he did not even try to know the truth when i said i was committed. at some point of time we couldn't even spend a day without talking. and when i was not going to work he would request me to come not to take a leave. he used to make feel like i was his first priority. i felt i was betrayed and he was cheating on me and stopped talking to him and couldn't take the change in two days. he even forgot that he borrowed some money from me. i took off for some days and went back to work again. he ill treated me over phone saying that i was being desperate. he even tried to kiss me with out taking my concern. That was something i couldn't take it. he did not have integrity. and he first spoke dirty about the girl whom he said was behind him and all out of blue he said she loves him truly but its not possible to marry her so was avoiding her. I think if a crosses that physical barrier with a girl a girl becomes unconditional and emotionally attached. it happened with me. I Like him so much and he says that his wedding was a call off because of me. he bad mouthed me to my friends . thank god my friends know me who i am. he talked **** about me saying that i asked him to marry and he left me because i asked him to marry. i dint know how far it was true co z i cud trust none. i asked him he did not admit but he told completely different words. and then i stopped talking completely for 2 weeks or so and i was proud of my self. he was so cheap and then i was so worried about him wondering that what would he get if he keeps doing like this . I accepted as my true friend infact my boyfriend wanted to share my whole life with him though i knew he was not the one for me. i deserve a lot better guy than him. how disrespectful was that. i worked for 2 more months and i resigned . i couldn't see him like that . i initiated talking to him coz i did not want to make any enemies. i want him in my life as a friend. But at the same time i c an't deny that i felt for him with all my heart. i was always there for him. but he doesn't love me. and the girl about who he was saying she got married too. but still these guys talk. i can't see him in pain but it really gets on my nerves the he behaved with me. but still i don't understand why am i being so unconditional to him. please help me out. he doesn't deserve me. I sometimes get worried about him too. i don't know how to deal with this