So to cut the story short I have a very good friend that I love and respect . On few occasions we have spoken about going to a spa together while husbands look after kids, (for the record husbands are very good friends ). Last weekend she mentioned that she is looking to book a spa since her birthday was coming up and mentioned her husband will be babysitting. I asked her who is she going with & she said she was planning of going with another friend of ours. I was slightly taken a back as she didn't mention anything to me anything and didn't even ask me that day if I wanted to go. I was a bit annoyed but didn't say anything. Today she sends a a group what's up message to me, another friend & the friend she was originally planning to go with asking us if we wanted to go . Would it be unreasonable to say no out of principle & would you feel annoyed. If a good friend did this to you . Thank you in advance 