Is this weird?

My sister, “June”, was best friends with “Brit” in high school. My sister “June” dated their friend “Bill” from like 7th grade until 11th grade. “Brit” & “Bill” have a quick fling & just stayed friends afterwards.

Fast forward & they’re all in their 30’s now.

“Brit”’s *mom* divorces her husband & starts dating “Bill”; her daughters high school best friends ex-boyfriend...

I know it’s none of my business but am I the only one who is slightly weirded out by this???