Since the query is written in third person I am assuming that you are expressing the issues that someone close to you is facing. I really appreciate that you reached out about the situation. From what you have mentioned she seems to be going through a lot in her personal life. It would help if she reached out to someone to talk about it. Since she feels stuck and cannot concentrate on her career aspirations due to the relationship issues she is facing, exploring her thoughts and feeling about the relationships might be helpful for her. Talking to a psychologist may help her  to explore her feelings and how she could cope with what she is experiencing now.

Dear human, thank your for sharing and reaching out. It seems like you've come here to seek help for your friend, which is a great thing to do. I appreciate you for being supportive of her and being there for her. I completely understand her situation but if the relationship is affecting her career or any other aspect of her life, either they need to end it mutually or they need to resolve the issues by reaching a common/mutual ground. Communication is the key factor in interpersonal relationships and thus they need to talk openly about where this relationship is headed rather than just assuming it. If she thinks that she is responsible for the guy's well-being, remind her that she is only responsible for her well-being and that nothing is worth one's peace of mind and sanity. She can either opt for a couple's counselor if they've mutually decided to resolve the issues or she can seek individual therapy to regain her mental stability and manage this situation in a more efficient way.

I appreciate your concern to support your friend.. Please suggest her to seek a professional support to overcome this issue in her current life.

Hi, you can contact me for an online appointment and we can explore this narrative together

Dear Concerned frd, From your description. It feels that your frd needs to work on herself and built a relation with herself first. Give her courage that she doesn't need a relationship currently . Give her courage that by being single or without a relation with another person she will get the oppurtunity to build a relation with herself. Give her reassurance that she is not responsible for the state of the guy. (That's just supiriority complex  talking which is a way of manipulating world and self). Have courage to feel responsible for self. Sooner or later the guy will understand. And give her reassurance that she is not missing out of anything. Letting go is a way to work on past truma and unhealthy patterns. Sometimes the best way to solve confusion is to sit and live in present.