[M]y night with my cousin [F]

This is the first time ever telling this story for the reasons that myself and my cousin (related by marriage not blood) never pursued anything after this or even spoke about it. We’re now both married. I had just turned 18 (M) my cousin at the time was 21 (F). We were inseparable most of our teen years, really close and I told her everything she told me everything. We knew kind of everything sexually about each other, like when we lost our virginity’s and everything we had done whatever. I knew I was always attracted to her and wanted to pursue it but didn’t because we were basically family.