Mon demi-frère m’a surprise en train de me masturber, la masturbation mutuelle m’a donné un orgasme et j’ai éjaculé sur le corps

I was caught masturbating by my stepbrother who wanted to join. I didn't want to let him, but when he started jerking his dick next to me, I got horny and wanted him to spray me all over with his cum while I masturbated with a dildo.