Be it labelled anxiety, jealousy or whatever; as the person on the other side it’s very easy to find that the behaviour described by the op can cause a creep into your own life that does have a controlling and limiting impact on your own life and wellbeing.
It’s always important to question how your own behaviour impact’s on any relationship you have. Even more so when a partner has potential mental health issues. But it becomes easy to steadily limit social connections and opportunities to simply keep the peace, and as your world shrinks a controlling influence can take more and more control without you being able to really plot the influence of it. It starts to tell when you find things like being at work or just popping to the shops by yourself easier than time with the person you love. And when you think about that, it’s pretty messed up.
Whilst clearly it would seem that some on here think wearing the hair shirt and suffering because someone else is ill is the only way to be, I would disagree. Clearly when you love someone you are committed to help and support, it’s part of love. But there does come a point that consideration for your own happiness has to also be significant, particularly when the other person’s issues could limit their ability to reflect and act on the impact of their behaviour. If looking after yourself in the face of extreme challenges makes me a butthurt Neanderthal, then please bring on the banhammer. Even if someone is willing to undertake any treatment or therapy to address an issue, the results or impact of potential ‘recovery’ or change may still not be significant enough to make a life that is happy or good enough for the person they live with.