Well... here it is! The casual designs of Boy GF and Girl BF!! 
Thank you for waiting. c:

It was difficult trying to find a song/chart so that I can showcase both sprites... after finding a song though, I’ve recharted it.

Mods used:

(I can't give out one of the casual mods since I have to ask for permission first, sorry!)
(But I can show the original mods though!)

Friday Night Funkin' Psych Engine: https://gamebanana.com/mods/309789 https://github.com/ShadowMario/FNF-PsychEngine/releases
Girl BF: https://gamebanana.com/mods/295605 (Yes that's mine.)
Boy Girlfriend: https://gamebanana.com/mods/185884 (Made by VolatileMask.)

The game itself:
itch.io (+download): https://ninja-muffin24.itch.io/funkin
Newgrounds: https://www.newgrounds.com/portal/view/770371