Player Supreme, you fall into the category of "I am dating but not exclusive." Dating can include ****ing and if girls know you are seeing others, no matter how attached they are to you, then they know you are not exclusive.
I placed "(cheating)" up there for a clear distinction of deception. Basically, if you are deceiving your girl, you are cheating.
Married or not, if you're lying and you wouldn't want your actions showing on that "Cheaters" show, then you're cheating.
If you're honest to her about wanting to see others, and doing it, again, you are in the "I am dating but not exclusive" slot.
I received a pm saying that he's dated plenty before but is currently single. Since I assume you're looking for others/trying to hookup/get a date, you also fall under the "I am dating but not exclusive" category. In retrospect I could've added an "experienced but single" category.