I'm meeting my ex's best friend tomorrow

Same batch, we have been on cordial terms, just Hi hello over the years. Now they are in town and thought we should catch up

This will, for sure, go as a report to the Ex.

Do I lie about my life? Say it is as good as my social media shows?

I have not interest in getting back with Ex or be involved with the friend. But we could add some spice to the report right?