[M] My first threesome and i’m insecure

Hi Ladies, so i was a little hesitant on doing this but it seems like it’s really going to happen. My girlfriend has wanted to have a threesome for a while now with another girl and it never really fell through but it finally is with one of her friends. I’m nervous because of my size, i’m about 5.5 inches and have been with 4 girls including my current girlfriend. All of them have seemed to have a great time but you could never know, what my question is , does 5.5 make you ladies feel good? It’s her best friend and i don’t want to make things awkward if i’m not good enough. Thanks in advance!

Source: reddit.com/r/gonewildstories/comments/kaw8mk/m_my_first_threesome_and_im_insecure