<human>: Can you provide a brief rundown of the text in within 3 sentences?

My mother died on the 16th of March 2012. She's only been dead a year and my father already found a new girlfriend. She is twenty years younger and she is Russian. We are Dutch, so she and my father don't even talk the same language. They talk English with each other and oh my god it's awful. My father's English is horrible. But whatever. It's been really hard for my brother - who still lives at home with me and my dad - to accept that he has a new woman in his life. We decided to support him and that's what we do - despite our feelings about it. However, he had an interesting announcement to make. On Sunday we heard about his new relationship. And the following Friday, he told us about his plan to start living together.

They have only been dating for a month. They don't even talk the same language. We haven't met her yet. I'm SO not ready for this! I can't believe it. I'm not ready for a ''stepmom'', I'm not even ready to meet her. And now things are rushing. He wants to live together with her because he's lonely, and he is deeply in love with her, and also because she has to decide whether she wants to go back to Russia or stay in Holland in a couple of months. I understand that he wants to live together. But this is going way too fast. I am feeling so awful, I feel so depressed. I know I'm acting like a five year old who doesn't get her way in life but oh my god. What do I do to deal with this? I'm also afraid that my father will make a mistake. They have only been dating for a month, she's twenty years younger, etc. They want to start living together in June. This is going way too fast.
<bot>: My father wants to live together with his new girlfriend. However, this is going way too fast. How do I deal with this?