Forrest Gump: The Unanswered Questions

Forrest Gump has been on heavy rotation on HBO lately. I haven't watched it in many years but I found myself watching 2 times in the past week. If you can ignore the too often repeated one-liners that have become ingrained in pop culture, it is a really great movie. But I can't seem to shake two very glaring questions.

1) Why do people get all misty eyed when Jenny and Forrest finally hook up? She essentially rapes a retarded person, who I believe lacks the mental capacity to give lawful consent, and the audience is supposed to accept this. She manages to go back to Forrest after being a coke/heroin fueled whore and mooches off of him for the happiest days of his life. Where are Forrest's care takers, where are the good people of Greenbow that make sure this quasi-functioning mentally disabled person is not being taken for all he is worth? They clearly cared enough to give him a job cutting grass at the high school, so why don't they question Jenny's motives. Where is Lt. Dan? Wasn't he supposed to be watching out for Forrest's money? In my view, Jenny comes back seduces Forrest and lives off of his assets for a good while and then just leave town.

2) Someone please explain to me how Forrest and Forrest f*cking Jr. don't have AIDS? We are supposed to believe that a decade of intravenous drug use and promiscuity in the San Francisco and Los Angeles area in the late 70's/early 80's wasn't the cause of Jenny's AIDS but that she somehow got it subsequent to raping Forrest and cleaning up her life. Seriously? I have seen "And the Band Played On" there is no way she gets out of that West Coast lifestyle unscathed. Forrest and Forrest Jr. would most definitely have it. And if that is not good enough for you, are we now to assume that Forrest and Jenny didn't consummate their marriage? I will give you that there are scenario's where Forrest Jr. could have been protected from contracting AIDS from his mother, but there is no way that you are going to convince me that a simpleton such as Forrest isn't going to want get all up on some Jenny after they are married. The man has only had the sex once before, he clearly is going to want it again. The only probable answer is that Forrest Gump has AIDS or in the words of his mother, "Life is like a San Francisco bathhouse in 1982, you never know what you're going to get!"