[FM] cucked my boyfriend

my boyfriend (19m) and i(19f) have been fantasizing about having a threesome with one of his friends for a couple of weeks. we planned for me to hook up with one of his friends before the threesome so it would less awkward during it. we decided i was going to take it slow and only give him head the first time we hooked up then we’d have sex the next time to make sure we were both it. the opportunity presented itself this weekend and i hooked up with his friend. i got a little carried away while i was giving him head and ended up fucking him. it was honestly so amazing.. my boyfriend was a little taken back when i told i fucked at first but now he’s super excited for the threesome!