feeling out of control

i know i should be happy that my partner and i are open but lately i just feel really weird about it. like this time with another person last week, he was so into me and i kinda let him take charge in ways i never do. i dont even remember much cause we got pretty drunk but afterwards it just felt bad somehow. i know theyre all adults consensual stuff but its gnawing at me that ive been the one getting lost like that. maybe i need to set some boundaries? but part of me feels like this is the whole point of being open.