I came on this board around 12 years ago to find a cure. I wasted years trying to find the ''cure'', imo there isn't one so I just cracked on with life and I deal with it.
I use blistex intensive moiturizer, it's in a little white tube.
It is hard to accept but believe me once you do your life will be a millions times better.
I have a partner and child now but all those years ago I never thought I would becuase of my crusty lips.
My advice, whilst although it may not be welcome is just move on!