Society & Culture - 102 free documentaries about love, dating & marriage.
Start with Why You Will Marry the Wrong Person (22 min, The School of Life), then STDs And Affairs: What Marriage Was Really Like In The 1900s (59 min, Absolute History). All 102 documentaries here are free to watch from their makers' official uploads. To read deeper, the top-rated book on love, dating & marriage is Modern Romance by Aziz Ansari.