A Shanghai photographer, known only by his username 'Cong Ming de Ben Ben Xiong' spent the last three years compiling candid photos of couples kissing in the Shanghai Metro. Clearly, love is in the air, and this is one PDA we don't actually mind looking at.

He has taken an upwards of 50-60 thousand photos a year from his travels on the Shanghai metro, and he captures moments like this.

kissmetro1.jpg

It is the unique moments in the lives of everyday citizens.

kissmetro2.jpg

They're pretty romantic too.

kissmetro3.jpg

Check out a few more in the gallery:

kissmetro4.jpg

kissmetro5.jpg

kissmetro6.jpg

kissmetro7.jpg

kissmetro8.jpg

kissmetro9.jpg

kissmetro10.jpg

kissmetro11.jpg