I'm not going to let a trans guy join me and my friends' all-girls dance group
Why would you not let a trans guy join you and your friends' all-girls dance group?
Because it's not a good idea to have a male in the group, only because I don't trust him.
You are being transphobic and to exclude other people based on gender is called discrimination. That will have ramifications to you and your group because people are super sensitive to transgender rights. I would just let the person join and see what happens.
Nah. I don't think we should let him join.
That is so wrong. People shouldn't be discriminated against. How would you feel if someone discriminated against you and excluded you from a group?