KOJAK's idea is a bit rough, but probably pretty workable, depending on if your "dates" are paid for by him 100%.
If you've been trading payments, then yeah, agree to join him out somewhere in some kind of social situation and act responsive to some other men.
"Excuse me, I'll be back in a few minutes. Just want to talk to Bill"
He will then either "get it" or he will ask, "What's up?" to which you respond, "Oh, I'm sorry, my bad. I didn't realize you viewed us as exclusive. I really enjoy HANGING OUT with you, but please forgive me if I gave the impression I was looking to be exclusive".
If you've been trading payments, then yeah, agree to join him out somewhere in some kind of social situation and act responsive to some other men.
"Excuse me, I'll be back in a few minutes. Just want to talk to Bill"
He will then either "get it" or he will ask, "What's up?" to which you respond, "Oh, I'm sorry, my bad. I didn't realize you viewed us as exclusive. I really enjoy HANGING OUT with you, but please forgive me if I gave the impression I was looking to be exclusive".