Forgive me for ranting, but...
NO NO NO NO NO NO NOOOOOOOOO!
Sorry about that, but the fact is, I was reading a bunch of the Marvel Indy comics last night, and they show me one thing that I already knew, and just support it further. Marion and Indy do not belong together! They have nothing in common I tell you, nothing, except perhaps a common role model in Abner. People make too big a deal over the Ravenwoods! Fedora is not Abner - Abner is not a grave robber, the University of Chicago never would have let him teach there if he ever was (they wouldn't let Indy teach there because of the Founding Fathers Day incident). By extension, it is illogical for Marion to be that important. Alright, so she's the first. Fact is, all the good Indy girls are redheads - Sophia, Alecia, Diedre, Gale, Nancy Stratemeyer. There's no way they had a lasting relationship. Implausible.