Long friendships wax and wane, but if they are solid they survive. My closest friend and I met at school nearly 70 years ago. Over that period we have been inseperable, at boarding school, seen very little of each other, when my children were small and she was single and building a career, and so much closer as we age, as, now, only her younger brother has known her as long as I have, and vice versa.
Your friend has a new partner, and of course other things, other friends will drift to the margins while this partnership is new. But what usually happens, is the new partnership settles down, and while things will not be the same, your friendship will stay firm, but different.
This made me quite teary - but smile too
You swap sleeping positions with your pet , where are you sleeping tonight?



