<human>: My boyfriend pays for a huge chunk of his parents' and brother's bills and expenses. His dad owns a business and my SO is constantly putting in money to keep it afloat. He even paid for attorneys when his dad was sued. He pays for all car repairs for his mom, dad, and brother. $800 to replace tires? SURE! He spends $500 on groceries for them several times a month. He's in the process of buying his brother a $3,000 bike even though his brother works full time making at least $40k a year and lives at home.

We're talking about moving in together and I could really see myself marrying him, but I'm afraid he'll always be a financial provider for his family. I'm worried about what will happen when we have kids, a mortgage, and expenses of our own. Right now, it's none of my business how he spends his money, but it will be later on if things progress. 

My question is, am I crazy for being worried? Is his family taking advantage of him? They're more than happy to take his money.

Give me the gist of the text in a nutshell
<bot>: My SO pays for most of his parents' and brother's bills. A LOT of money. I'm worried about our future together.