Just a quick trailer showing some features that the two mods have.

Casual Boyfriend: https://gamebanana.com/mods/308400
Casual Girlfriend: https://gamebanana.com/mods/300057

Mods used:
Friday Night Funkin' Kade Engine: https://gamebanana.com/mods/44291
Accurate Colored Health Bar Icons: https://gamebanana.com/mods/31011

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