Being fatherless

I'm 20 and still in college. My parents were planning to separate cause my dad accused my mom of cheating. All because she denied him sex one time. He said he'd been carrying that 'no' for eight months. And cries at night cause of it. When i spoke to him about it and told him it's not fair to accuse my mom of cheating, he yelled at me and told me i'm ungrateful and didn't appreciate the sacrifices he did just to raise me. He doesn't even have any evidence that my mom actually cheated (she didn't), and his only belief that she is cheating is because she said no to him. Now, he is threatening to leave us. My fathers income is a big asset in our family even though my mom works as well. How am i supposed to continue college? lol.