threesome/experimenting?

so my husband and I have been together for four years, I told him that I was bi even though I've never been with a woman (just kissing) I considered myself bisexual at the young age of 10 (24 now)

I always felt like it was hard for me to continue friendships with girls because I never explored my sexuality and was always awkward and dorky around any and all women. i hope this experience is a positive one and brings about confidence in everyone involved.

So this past weekend we were talking and we asked a girl we both used to work with (we've hung out with her a few times together and a few times with just her and I) if she would be interested in hanging out with me sometime soon. she said "yes! I'm so glad you asked, I've always thought you were beautiful. I've tried to get with you a couple times before! " she even sent some 🙈 pics.

should I be worried about her catching feelings? and should I mention that to her beforehand? I told her that it would just be us two and then if we're comfortable my husband can join us.

any thoughts? and tips? my husband is very understanding and excited to see that side of me .we decided it will be a one time, few time thing but just with her. I guess it just depends on how it goes.