<human>: Give me the gist of the text in a nutshell

Here's the basics. This girlfriend, who I don't like and my family hates, is pregnant. They've been together ~5 months, known each other slightly longer than that. I don't like her, I think she's crazy and just looking for a father figure for her daughter. Daughter is about 2 years old. I let my brother know my opposition to the relationship early on but didn't press it. I feel like I should have because a part of me saw this coming.

If he sticks with the girl he risks losing everything from our family. He is, immature to say the least and currently gets a lot of help from my parents. They will cut him off because of this, no car, no roof, etc. The girl is nuts. Also in the little bit that he's talked to me about this he has an attitude similar to, oh, it's all going to work out, we'll be a happy family, picket fence, dog and all. Just very naive. I don't think he grasps that this is a life altering situation.

I really just don't feel like he knows the gravity of the situation. That he doesn't know that he will be surrendering his life, entirely. I know my mom has talked to him about adoption/abortion but it didn't seem to make a dent. I know she's also talked to him about being completely cut off, also didn't make a dent.
<bot>: brother got GF of ~5 months pregnant and I need to give him a life lesson talk. IMO stuck is dick in crazy. Need some advice.