As the title says my best friend is in a long term relationship with a guy who won't propose. She and I are both 28 female and we are each partners to brothers from the same family. We started dating them back in 2016 with only a month difference between relationship start. I am dating the older brother (31M)of the two, which isn't saying too much as they are only 14 months apart. Everything was great when we started dating the brothers and we became fast friends. She is super sweet and shy and she reminds me of my partner a lot. In 2019, I proposed to my partner and that was when things began to change. My best friend told me she was happy for me and that she couldn't wait to be proposed to by her boyfriend. My partner and I got married in 2022 and we had a baby last year in May. After my wedding, my best friend told me how she has been waiting for him to propose and she even asked him if she proposed to him if he would say yes. He told her he would say no. I used to tell her that she should break up with him but I felt bad because she loves him so much. In December 2022 he told her he proposed before their next anniversary which would be May 2023. She was so excited and the day came and went. Then he told her he would propose before the end of the year. Well that also came and went. Finally he told her he would propose before their next anniversary in May 2024. She has gotten her hopes up so much and he continues to let her down. I have tried to be a good friend and help her with this but I don't think they should be together. She continues to tell me about her sadness in the relationship and I feel lost on what to do. They finally moved in together almost a year ago now and she has brought up the topic of marriage again with him. They almost broke up in January of this year and she told him he needed to go to therapy or she would leave. He has money issues and won’t spend it on something he can not get a return value from so a wedding ring, a wedding, and kids are hard for him to spend money on. They also can not conceive children due to her mental health issues and she has brought up adoption. When they babysat my son, he won’t help her and refuses to change a diaper or play with him. She ended up taking care of him alone. He was so distraught at the idea of losing her and did go to therapy but recently he stopped because it's too “expensive”. It's also hard for me because her boyfriend is my brother in law and my husband hears these complaints from her and doesn't understand why she is still with him. She has told me several times she isn't going to leave him. I just needed to vent because I have listened to this same thing for the past 5 years. It's exhausting but I love her and want to help her. I just don’t think it is something I can help her with anymore. And I feel like at this point she deserves this because it is of her own making. Is that horrible? I don’t know anymore.