I have finally completed every route in this game... At least, every route I know of. It was gorgeous. I loved every second of this. My favorite routes in order were:
Wingding's route (He's the best skele. Hands down. No competition. The "It's quiet without you" line was what sold me for good.)
Harem route (All the skeles including the best boy. Very happy with that)
Papyrus' route (Sans might've stood a chance if he weren't a trash goblin. Besides, Paps is just so- Agh! He's adorable. The tag-teaming was the cutest thing I have ever had the pleasure of reading through.)
Sans' route (Super cute. Minus my 69 deaths. Bonus points for the funny number. More bonus points for the puns. My sense of humor is terrible, and he's terrible. A match made in hell lmao.)
Grillby's route (Not an inherit fan of him, but I happen to have a weakness for hot guys telling me I'm a good girl lol)
Asriel's route (Friggin adorable. Super well written. Buuuut he's a bit too sweet for my tastes as a character in general... Perhaps I just have bad tastes)
Friendship route (It physically pained me. You know how hard it is NOT to smooch ANYONE? Still was super cute though lol)
Sirentale, here I come >:)