My Dad is an asshole and he has lost all my respect.

He has been cheating on my mum for long. I’m 20, however I have two little sisters. One is 8 and the other is 15. The little one was the one who found out( through my dads phone), she told my mum. My mum has always loved my dad. He is successful , works out and it’s in good shape. Therefore my mum forgave him but he wants the divorce.

Now my mum is working as a waitress (paid minimum wage) and my dad doesn’t want to see my little sisters again. He wants his weekends of partying and fucking girls. Spending money from the account of both my mum and dad for going on trips with his friends. For example last week he went to Ibiza to party with his best friend in a yacht. For my point of view I see it as he is an asshole, he missed many of my birthdays since he was in “business trips”. He is never home for my mum or my sisters. When they need a man.

I don’t want this for neither my mum or my sisters. Specially the little one. I don’t want her to not have a father figure in her life and be like one of these fucked up girls.

I’m studying aboard getting a good education so I’m not home and I found this out last week. My dad hasn’t told me yet since he doesn’t have the balls to tell me. My mum is moving out to a shitty apartment with my littlest sisters. I want the best for them, they are my family and they are suffering a lot.

How would you approach this situation? Went to see my dad and he is acting like nothing happened. I don’t care if he doesn’t want to be with my mum. However I see it unfair that my sisters won’t have a male figure. How should I deal with this? I need help