My (M25) gf (F25) is going to meet up with a guy tn and was wondering what are some boundaries so far Iv told her basic ones such as not doing anything that we don’t do and making sure we debrief and talk about the whole thing after.

A little background is that we are long distance and were gunna have a threesum with this guy but I told her maybe she should get lunch to get to know him and stuff because biggest thing is her pleasure and comfortability but she did not want to meet with him unless I was there. Well things took a turn today and she got super horny sexting both of us and said “baby I want to get fucked 😩” this actually turned me on a lot, so I mentioned the guy and said that i’d let her see him if she wanted too. I was fully expecting her to say no but she responded with “Really baby? He could take a POV for you baby. The grip of my pussy on his dick would be insane “ this also really turned me. She then asked for my permission and if I would be ok with It I said yes and he did the same, but I did tell them I would definitely want a video of the whole thing they were both cool with that. She was super excited about that and said she wants to make a really good one for me.

so I was wondering what other boundaries I should look at and also what I should expect. or should I just tell her I want to wait for the threesum?