sorry it felt out of control, it sounds like a set up to me.
Iv been there before, and threesomes just arent worth it in my opinion.
Its good to experiment but set rules first so it feels safe for everyone, make sure birth control and condoms, dams are used so noone is at risk of an sti or unwanted pregnancy, my other advice is dont involve alchohol or drugs that trick you mind and make less control.