Why does she always lie to me?

My friend started dating a man at 15 who was in his 30s. They stayed together for about 5 years. He lied to her about his age, being married, having children, sleeping with other women etc. She continues to insist that they were in a committed serious relationship. When she’s with him, she lies to you, ditches you, acts like you don’t exist, uses you to get to him (say let’s hang out at a club but it’s really a club she knows he might be at), even lies about her whereabouts. I’ve been honest with her about my feelings towards the situation throughout our lives. We are now in our late 20s and she has recently begun seeing him again. I notice the same patterns in how she treats me and her other friends starting again. When we try to call her on it, she makes it seem like we’re jealous of their relationship or we don’t like her boyfriend. Really the problem we have is her. She would throw us out in a second to be with him and tbh it’s hurtful esp considering the way this man has treated her. What do we do?
Why does she always lie to me?
Post Opinion