Update:

Thank you for all the understanding answers. She paid all the deposit for the house. He knew they wanted to buy for years and he had 300 dollar saved up! They lost a baby 3 years ago. Mom said it was probably the best as the relationship wasn’t stable, both didn’t speak with her for ages. Now my mom doesn’t say anything negative anymore as she is afraid to loose her again. She is so into having a baby now. She thinks there are way worse partners. He can be funny and kind. She just sees the positives.

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I know it’s not my business, but I wonder how to deal with it. Can I just ignore it?

My sister has a BF for 7 years now. She is struggling with her confidence and got herself a not stable partner. They break up on a regular base. Now they bought a house together and wanted to break up again already asking how to deal with the dept. They are back together as always. She desperately wants kids. She is 32 now and they want to start this year!

Apart from their break ups, he drinks alcohol every day! When I visit them for breakfast at a weekend he is already drunk. He gets very emotional and aggressive when he is drunk. He also cannot handle his income. He spends it on ridiculous things. 3D Printer, boats, motorbikes,… he doesn’t have a high income and is always broke. He has two dogs and two horses. Obviously he also has lots of debts… He was a bouncer pre Covid and enjoyed his position. He can tell people of and threaten them.

I know it’s her choice. But I am afraid for the future kids. Children need a stable home. She doesn’t want to start from the beginning and look for a new partner. She just wants kids. My mom thinks he might change once he is responsible for kids.

What can I do???