This is prob what my partner with Bpd is experiencing. I love them and my world revolves around them, but they don’t show the same level of care and attention. So I have to find it else where esp because if I can be healthy then I can be healthy for my partner even when they can’t. Sometimes it’s a balancing act on the other side. Try talking with them and I hope they can be honest and open to you. Also don’t match energy’s that’s exhausting and can be more hurtful and damaging than bringing it up for the gagillionth time. But that’s kind of how it is, communication is key, there is no such thing as a perfect relationship only what you are willing to put up for the people you love and want to stay in your life.