An O please.
Yes both vowels are in there. 
"I/ _ E _ E _/ T H O _ _ H T/ T H E/ _ _ _ T/ _ O _ _ _/ _ OO _/ _ O/ _ _ _ H/
_ I _ E/ T H E/ _ _ T _ _ E."
Ok I got access to a computer from the turn of the century so it is really slow but I have access. Yeah!!! So my next guess is “N”
“G” pweeze 
I think I got it but I will let someone else guess it as I will be to busy with family to be on here running a puzzle. Good one!
Updated:
"I/ N E _ E _/ T H O G _ H T/ T H E/ _ _ _ T/ _ O _ _ _/ _ OO _/ _ O/ _ _ _ H/
_ I _ E/ T H E/ _ _ T _ _ E."
An ‘R’ please
A “V”, please. I’d also like to point out that I think the “G” in the third word is out of place, but you never know.
Tick tick tick I’ll be home tomorrow night. you guys better burn some brain cells before I get back if you want to win this one LOL
LOL here’s the updated game.
"I/ N E V E R/ T H O G _ H T/ T H E/ _ _ _ T/ _ O _ _ _/ _ OO _/ _ O/ _ _ _ H/
_ I _ E/ T H E/ _ _ T _ _RE."
May I have an “U”?
Also, LO, I think you made a mistake in your update, in the 3rd word: I think the G should run one space to the right 
Updated, corrected and keep on guessing:
"I/ N E V E R/ T H O U G H T/ T H E/ _ _ _ T/ _ O U _ _/ _ OO _/
_ O/ _ U _ H/ _ I _ E/ T H E/ _ U T _ _RE."
Give them a P and if no one gets it well then I guess I will just have to step in.
I never thought the past would look so much like the future
Yeahhhhhhhhhhhh!!!
That is awesomely correct and you’re up next. 
+ 