Dabbling with domination
Before you take his cage off start talking in a heavy and seductive voice close to his ear about how horny you are and much you want a big cock to fill you up. Tell him how you don't think he can give you what you're looking for anymore and that you want to experience another cock. Make up a believable story about an ex or a friend with a much larger cock who would love to hook up with you in a moments notice. Maybe even show him a text or picture this person sent you (maybe it's real and you actually have a guy on call or maybe it's not). The trick is to keep your man desperately wanting to come. Ask him if he thinks you deserve a big cock. Someone who will fuck you harder and longer than he can. Tease him that you've been fantasizing about fucking this friend/ex who lives nearby and then coming home with a hot load for your man to eat out.