My father is having an extramarital affair. Part of me wants to end my relationship with him for cheating on my mom, but i worry that he will be depressed as he loves me a lot. How do I deal with this situation?

First of all, do you want to take part in this issue? If so, think of the consequences of your actions, for you, for him and for your mother. Best case scenario, worst case scenario, side effects... Another course of action is learning about the person who your father is cheating with: does she know that him is cheating? Does she know what she's doing? Everything is a question and you have some answers. Think carefully before passing your judgement.

If you feel you need to do it for yourself then do it. He knows what he did and later on he will regret. After this initial thing has gone by maybe later on you two can rebuild your relationship

The nature of your question shows a strong moral compass, maturity, and consideration for others. You are right to be concerned. It is considerate to think about your father's feelings, but at the same time you have to consider whether he loves you enough to allow you to express your true opinions to him. If you would like to speak with him about this topic without intervening on the behavior you disapprove of, you will need to arrange a time and place where you can communicate with him away from your mother. It is important to communicate in a non-threatening and non-judgmental way so as to ensure your father is comfortable sharing things with you. An important key phrase is "When you __, I feel __." That way, you keep the focus on his behaviors rather than conveying an inherent judgment of his character or identity. I hope you can talk to your father in a way that you feel heard. I know this must be difficult for you to deal with. Ultimately, his behaviors are his choice and his alone, and even if you do not approve of his behaviors, I hope you can maintain a sense of closeness with your father, as the parent-child bond is a key contributor to one's emotional well-being. Best of luck.

I feel that any situation with an affair is unfair in everyones life. I think you should talk to him and ask him what he really wants.

It's good that you care about your mom that much. Talking to your father would be good step to start processing the situation.

Speak to your father about his actions. Let him know how it makes you feel, and that it makes you want to possibly cut him out. Try to understand why he is having an affair, and if your mother knows about it. It may seem out there, but your parents could have an open relationship, or- not be that happy together. I grew up with my parents separated, though not divorced, since I was five. My mother was having several affairs, and my father had one around the time they broke up. Sometimes having an affair can cause less conflict in the household, as long as both partners are aware of it.

You should sit and talk with him about how you are feeling and let the answer evolve. Do let him know your concern and love for him. Try some family therapy.

This shows that you are a sensitive person. Control your emotions and do what is right. Talk to him about this. By not doing anything, you are cheating on your mom.

Do your hardest to tell, teach, and show him how wrong that is, and that if he truly doesnt love your mother anymore then he needs to be honest and upfront with her about that too, rather than trying to just leave her in the past and move on, while sneaking around. Im sure its alot of stress for him even to be doing what hes doing, and mention that to him, to lean him more towards wanting to stop doing that. He could still love your mother very much and not be thinking right or have external influences that are altering the way he would usually react and decide about decisions like that, and if so, you need to ease into him while talking to him, because you could get him to vent out to you, what that is. If we can stop all the problems in one go, rather than working at one at a time, is great.