Depression. Trust in people. plz help.

I am unmarried, currently in a relation with a married man who have 2 kids. When this relation started i was not aware of this. After spending 6 months i came to know from his wife as by mistake she picked his phone. He is married from past 15 years. Except from this..that he lost his parents when he was 7, everything said by him was a lie. I already told him about my past relation which was in 2009 & ended by 2011. I was in love earlier. I was searching for a suitable match for my own self every time, i found fake person. Most of guys want to make relation & then they will decide weather to marry or not. Now with current person, he wants to marry but not in India as he know i am planning for Canada. I am youngest in my family. When i lost my dad, after his death i was been molest by many men who came to home for showing there condolence. As our financial condition was not good. When ever i try to tell my mom about all this, they prove me wrong. I lost my trust in people. plz help.