Have you ever wondered what it would be like if you had more than one sex partner? Would you include a friend?

Do it all the time. Works best if everyone's patient with each other and emotionally honest.

Involving someone else can go two ways - great or awful. If your partner is emotionally secure with you it can be ok, but I wouldn't recommend it.

I've thought about it, I want his friend with us, but I don't think he's okay with that and I'm not okay with seeing with another girl, so it depends.

in my opinion, its a bad idea to involve someone else in your relationship.
that person could and would say yes but they will not think of you the same. been there done that. you definitely have to be able to trust each other if you do add in the bedroom.
some people are open to having open relationships but its not for everyone. we thought that one of us would try to secretly meet up w the other person. which goes to say there wasnt much trust there and I won't do it again.

maybe just try it by yourself with both but seperate to see which you prefer. good luck to you!

Do you mean adding a partner like a threesome or adding a partner like an open relationship?

Either way, it takes a lot of trust.