He lied to me about his wife

I dated this guy for like 10 months now at first he told me he’s separated but later on, I found out that he is lying. Basically, they are still together and married I am just a mistress. Every time his wife calls he asks me to be quiet or leave the room so he’s wife won’t see me or anything like that in the video call. he told me that it’s temporary, they are going to divorce and wants to be with me I just don’t know if he’s telling me the truth because he’s really good at lying to his wife he lies really good. I’m scared that someday he’ll do the same to me, what do you think mama nkima about this all situation? Advise me