NC for this because I probably am BU.
My DP started growing his beard about three years ago. I liked it at first because it was neat, tidy and well groomed. It's now almost down to his collarbones and all shades of blonde, light brown and ginger. The ends are straggly and gappy and it just looks bushy and unkempt. My friends and family are starting to make comments about it to me when I already hate it and am embarrassed by it! He wants to keep growing it but it just looks horrible. He has a gorgeous face and he is just ruining it. 
He gets food in it every time we go out to eat. It's getting to the point where I just don't think I will fancy him if this keeps on. WIBU to demand he takes better care of it (and keeps it shorter!) or should I just leave him to it, despite hating it? If I am not BU, how do I tell him I hate it and want it gone without hurting his feelings? 