Looking for story of a boy thats picked up by a queen caue he looks like her son

[idonotexistbeyondhere]

Hello, i am looking for a story as the tilte says.

its set in medival era and a boy is picked up from the street by a queen to stand body double for her son, so he will get murdered instead of him i remember theres an assasination attempt he survives and then realizes the prince is gay and he has to stand in for him in pleasin his harem and mother

hope someone can help best regards i found it in the scifi - fantasy story series but seem to have lost it best regards