I'm a 22-year-old guy, and I’ve been in a relationship with my 23-year-old girlfriend for three years. Throughout our relationship, there have been multiple instances where she has led people on, making them feel interested in her, only to reject them when they made a move. There have also been numerous occasions where she still had feelings for her ex and she has cheated on me several times.
Recently, we got back together after an 8-month breakup, with the agreement that she would not talk to any other guys. Despite this, she continued to have late-night calls with other guys. When I confronted her about this and asked her to stop, she promised she would. However, on her birthday, she was again in contact with the same guy I had asked her not to talk to. I found their chats, which were quite flirty, and she had even shared pictures with him.
I work 12-hour shifts every day, and I am the only earning member of my family. My father has lost both his kidneys, and my mother is gradually losing her sight. Despite asking her to stop her behavior because of my family responsibilities, she continues to do this. We had even discussed getting married, but her repeated actions have made it difficult for me to love her again.
Given these circumstances, what should I do now?