please help

This is a long story, so I’m trying to make things short. In synopsis I have been friends with my girlfriend for a long time, and we recently started dating about 1.5 years ago. However. We broke up a couple months ago because they wanted to seek mental health help and were really struggling. I wanted to stay together, even as they worked through it as someone with many mood disorders, but they were adamant on wanting to split. But ever since, even though for the most part nothing meaningful changed about the nature of our relationship, they haven’t made any true efforts to seek help and have even rescinded the fact that they want to do so. I love them dearly, but sometimes I get frustrated (mostly in the past) as they may get upset about something and it ends up getting blown up on me. Furthermore, recently I brought up something that hurt my feelings with them and a mutual friend and the mutual friend was must more engaged in the conversation while my partner (I’m not even sure what to call them) didn’t speak most of the time. I always try to be supportive and kind if they bring something up to me and a couple days after the talk, neither of us have contacted each other outright and yet they gave me what I would consider a rude or mean response (on grounds of being dismissive) and when I called them out on it, they say theyre “just replying”. I don’t want to break things off. I’m hopelessly in love with this person and have been for a long time. But I’m struggling with feeling like I’m the one who is constantly putting in effort and always trying to be the mediator. I’m willing to uproot my whole life, leaving my hometown for them as we’ve planned for a while and I’ve been crying in the shower for like 90 minutes over this. I feel so unheard and not seen and I’m not angry I just feel really hurt and like it’s starting to become more an emotional burden on me constantly