Cheating by boy friend

I had been in a relationship with a boy who was 4 yrs younger to ne,i repeatedly denied that it was an impossible relationship but he kept on insisting tharlt once we get settled in our lives he will take me to his parents and convince them,he gradually started manipulating my brain,within a few months i fell in love with him,recently he took me to a park and touche my private parts wirhout my consent,i tried stopping him but he said that if i have trust on him then everything is fine.out of insecurity i just asked him to introduce me to his parents just as his his gf but he denied,i talked to his mothar and now being afraid of his mother he broke his promise of marriage and blocked me on phone saying that his parents would never accept me.i am suffering from depression,can i file a case against him,why did he try to come so close without even informing his parents that he was in a relationship with me,he did everything in a hidden way and when the truth got revealed he blocked me and his mother insulted me badly,can i file a molestation case against him?