The best replacement for singles is albums.

The best alternatives to singles are rated as following:
★★★★★  albums
★★★★  couples
★★★  doubles tennis
★★  doubles
★★  singles
★  accumulators
★  duals
★  trades
★  doubles badminton
  reality bites
  catholic match
  dating sites
  boosters
  reps for deadlift
  christian mingle

Your alternative for singles is not listed? Suggest!
Speaking about singles, one probably shouldn't forget about album.

Other search terms related to singles and their ratings are:
★★★★★ album
You have in mind a companion for singles and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of singles in all years. Click on graph for more.
singles
albums
couples