This is one of the most famous photographs from the Second World War. Apparently the nurse slapped the soldier immediately after. The event was the celebration of the end of the war and it was taken in Times Square by Alfred Eisenstaedt. New York 1945
RasMarley Mili, Gjon - 1941 Girl Blowing Soap Bubbles Gjon Mili (November 1904 – February was an Albanian-American photographer best known for his work published in LIFE which he photographed artists such as Pablo Picasso .
"Taken by Horace Warner in 1912 in Spitalfields England, these images of poverty stricken children show the horrible existences they had to endure just to survive." - this is the caption. This looks like flirting to me.