My ex Lied, should i be his shoulder to lean on?

We had three years together, lots of problems. Problems because, i suspected that he was nothing but a lier! GUESS WAT? This whole time he had a wife, and i fell for his every single lie. He convinced me that it had to do about his two kids...he told me they were divorced..that he was cheated on while he was out of state. He works out of state, so i had no way to see his wife or talk to her. He had excuses for him to go alone....Now i trapped him in his big lie and twisted...he lost both of us. I feel bad because, he's depressed, and needs a shoulder to lean on!! I m scared to go, because im weak and i will fall again. What should i do??? HELP, HELP!!