You can't decode SHA-1. It's a hash, not an encryption. Meaning there are countless combinations that can create that exact same code. So don't be an *** and either don't tell us or do it in a code that you can actually decode.
Yes it does, Base64 can be decoded the same as binary.
Your Base64 message says:
"Ok, screw it, have a full list.
At various points in time, I've crushed on MadameMajora, Hylian_Monolith, DarkLink7, Imprisoned, Raindrop 14 and LittleGumball...
PS: I applaud you for taking the time to translate this."
Well when I input it back in the translator it gave me a set of [ and ].
So then just post who you actually crushed on, don't waste time with code, and don't waste time with copious amounts of spoiler tags (really they shouldn't be here at all; if you're uncomfortable mentioning who you crushed on, just don't post.) imo this Thread's supposed to be (somewhat?) serious, not a Forum Game. :/