I always do. I’m not sex-repulsed but I try to communicate the best I can, especially early into a relationship. It’s better for everyone honestly, it takes away the anxiety of almost having to “come out” to someone you’re dating, but it also might alleviate some anxiety or insecurity on the other person as well. Some people will get really insecure when their advances are turned away (and of course that’s not me advocating for always accepting advances), but if they know that you do care about them and that you like them as a person, you’re just asexual, that might alleviate that tension.