Couple getting intimate on couch. (Photo by Vincent Besnault/Getty Images)

A couple walk in the Retiro park in Madrid on November 17, 2020 as a thick fog falls on the Spanish capital. (Photo by Gabriel Bouys/AFP Photo)

Young couple in BDSM action on the leather sofa. (Photo by Alamy Stock Photo)

Young couple masturbating while using virtual reality glasses in the bed. Happy lover having sеx with vr goggles 3d in the bedroom. (Photo by Alamy Stock Photo)

A couple dance by the Golden Horn leading to the Bosphorus Strait separating Europe and Asia, in Istanbul, Friday, May 14, 2021. (Photo by Emrah Gurel/AP Photo)

A girl walks along former railway tracks in the so- called “Tunnel of Love”, surrounded by arches of intertwined trees, near the Ukrainian village of Klevan, Rivno region, on August 6, 2018. The tunnel of about five kilometres in length is a botanical phenomenon, which became a cult place for tourists and couples in love. The tourist legend says that wishes of couples in love will come true, if the couple passes through the tunnel. (Photo by Sergei Supinsky/AFP Photo)

Close up of a couple, with the woman holding the man's knee, underneath a table. (Photo by Peter Dazeley/Getty Images)

Photographer Ma Hongjie has spent 11 years documenting families in various parts of China for his upcoming book The Family Belongings of Chinese People. Here: a couple with their belongings and vegetables in Hebei Huailai county. (Photo by Ma Hongjie)