Apparently, Marion Ravenwood was supposed to be literally a child (somewhere between 10 and 15) when she and Indy “had an affair”.
Way to promote child rape, dudes. Makes me hate you, hate Indy, hate the whole franchise, even more than that travesty of a movie Crystal Skull did.
ETA: It also make the “romantic” ending in Crystal Skull absolutely squicky.
If you feel like combing through the whole script, it’s here.
And if you do comb through it, be sure to note the rampant racism too: the reference to “Third World sleazos” is particularly ripe.