Seinfeld- Jerry and Elaine are exes and breify get back together at the end of season one
Friends- lots of romantic entaglements but mainly Chandler/Monica, Ross/Rachel, and Joey/Rachel
How I Met Your Mother - two of the main characters are a steady couple, the other three are a love triangle
Big Bang Theory- by the end, it’s three couples and one single guy
Any shows like these where the main characters never date each other or hook up with each other?
The thing is that love is an pretty common theme, and a great way to build a conflict, meaning a story.
Even RPG nerd end up having some romance arc in their story, because suddenly it explains the murder, battle and other drama making us roll the dices (and in 90% it’s suggested rather than explicit)