My partner wants to add another person? /u/kt1213 Sex

My partner (33m) and I (28f) have been talking a lot recently about adding a third person to the bedroom. I wouldn’t call it a thruple, but a long term booty call? We have been monogamous for our entire relationship (5 years) and I feel like adding someone is a slippery slope. I have a lot of issues and insecurities about it, but I am also curious. I think I am pretty sex positive and I am open to trying it, but I know how complicated things can get with human emotions. I am scared that it would change the dynamic in the bedroom when it comes to just the two of us. I am scared that he would fall for her because sex is such an intimate thing, not only physically but emotionally. I am scared that things would get messy if someone catches feelings.For those who have added another person, how did it go? What did you learn from it?

My partner (33m) and I (28f) have been talking a lot recently about adding a third person to the bedroom. I wouldn’t call it a thruple, but a long term booty call? We have been monogamous for our entire relationship (5 years) and I feel like adding someone is a slippery slope. I have a lot of issues and insecurities about it, but I am also curious. I think I am pretty sex positive and I am open to trying it, but I know how complicated things can get with human emotions. I am scared that it would change the dynamic in the bedroom when it comes to just the two of us. I am scared that he would fall for her because sex is such an intimate thing, not only physically but emotionally. I am scared that things would get messy if someone catches feelings.For those who have added another person, how did it go? What did you learn from it?