Robert Zemeckis' drama Forrest Gump has long been a recognized classic of cinema. However, the 1994 film still causes heated debate.
Thus, many fans of the film believe that Forrest Jr. is not the biological son of the main character. Although Forrest accepted the boy as his own, some details of the film make you wonder: did Jenny deceive her faithful friend?
There is no evidence in the film that Forrest Gump and Jenny Curran were intimate. And the naive Forrest with his special view of the world might not understand what is needed to conceive a child.

Several years pass between the birth of Forrest Jr. and Jenny's revelation that she has a baby. Why such a long break, why did the heroine hide her son? Perhaps she was not sure of his paternity or raised the child with another man. Only before her death, the woman decides to return to Forrest to provide her son with a stable future.
Another clue is that the boy did not inherit his father's feeblemindedness, but grew up the smartest among his peers.
But why then did Jenny call her son Forrest Jr.? Probably, the heroine wanted to honor the memory of the man who had always been her support and moral compass.