Most Helpful Guy
It's up to the girl in this exclusive relationship. If she considers it cheating against her and he keeps talking with these other women than it's cheating.
Does he hide it or does he do it openly in front of her and show her what he's saying to these other women? If he's doing it behind her back and what he is saying with them is in private than she has more to be upset about.
Most Helpful Girl
If you're exclusive then yes, there should be no reason why his dating profiles are active.