Me and my boyfriend are ‘experimenting’ Sunday and I’m really nervous

Me (f22) and my boyfriend (m22) are having a threesome Sunday and I’m really nervous. I feel like I can’t tell any of my friends because ion want any judgement from ppl close to me but damn. We are having a threesome with a woman I became friends with about 5 months ago. I had a little get together in one of the recent months. I could tell she found me and my boyfriend attractive which was pretty weird since it’s usually one or the other. I asked my boyfriend if that’s someone he wanted to do a while back ( because that’s something I wanted to try) and we’ve been talking about it for almost a year now. We’re just now finding a person to do it with. We’re going to be hanging out soon to really go into depth about our boundaries and possible safe words.

I feel a little nervous tho. I’m usually pretty dominant. My boyfriend and my friend are both submissive which is going to be a little challenging especially if she also is a brat.

Mini update: we’re about to hang out and really go in depth about this. Im actually really excited. I’ll update after the conversation.

Update: the Threesome happened. A lot of people said it was going to ruin the relationship but it didn’t. The relationship feel exactly the same as it did before. We really had fun! My boyfriend enjoyed it. i enjoyed. our friend did too! After, we ended up making dinner and was just laughing about it. me and my boyfriend got home we talked in depth about how we felt and what we liked and didnt liked. We both reassured each-other that we felt fine after everything and didn’t feel like we crossed any boundaries. It was really cool experimenting and I feel as though I did it with the best people to have this kind of experience with