Boyfriend has me lock his penis in a cage

Does anyone else and their boy friend do role play where you as the women are the mistress and he's the peasant? My boy friend told me it was always one of his fantasies so he bought a cage for his penis. The cage is suppose to keep him from getting an errection and masterbating. That way his "mistress" is the only way he'll be able to cum. I have the keys to the cage. He has been locked up for two days now. I almost worry that he might be gay bc of this.... (because he wants to feel feminized). (He also likes to wear my underwear under his boxers, over the cage) maybe I'm just thinking that bc it's soemthing I've never tried before and I'm use to being the submissive one, not the dominant. But I love him so I'm willing to try what he likes. Please if anyone has any thoughts, opinions, facts, stories, or anything about this please share!