Hi Barry,

You seem to be referring to this girl as your friend rather than your girlfriend.  She is now seeing someone which means she has a boyfriend.  If she isn’t replying to your texts then she is attempting to cut contact with you.  How can you go on a trip with her if she is not really communicating with you?  I think, from what little you say, that would be very awkward for both of you.

How long have you known this person for and is there any reason for you to think that you had more than a passing friendship?

Perhaps you could ask her out for a coffee and a chat to discuss why she is acting like this.  If she refuses, then either take someone else on the trip with you or cancel it altogether.

Peggy