I feel, it's better to just look for someone you are compatible with, and who meets your needs. The chances, that a person in the dating pool has some type of illness, is pretty likely. Diagnosed or not.

Unlike, seeking out a person, who could, say, be a good listener, have similar interests, etc(whatever you are looking for), I wouldn't, personally, add this to the list of what I'd look for, at the same time, it's safe to say, you may be able to rest a little easier, about your own disorders.

NIMH · The Numbers Count: Mental Disorders in America