(I'm not really into Sans X Toriel but sometimes we gotta do what we gotta do XD)

*Toriel POV*
he asked me out on a date today I'm soo excited! I'm in my room right now trying on some clothes. I really don't know what to wear! frisk is helping me they say I have to wear something other than my robes for my date I'm not too thrilled about that but whatever, sans is taking me to Mettatons new restaurant. I turn around and see frisk going through a box they pull out a red dress. "Oh my child, I haven't seen that thing in forever!" Frisk signs for me to try it on "ok my child"

*Sans POV*
I had finally asked Toriel out on a date today after being a wimp for so long... Well I guess you could say I was "scared to the bone hehheh" well anyway I'm getting ready for my date right now I'm getting ready to leave when I hear "YOU'RE NOT LEAVING LOOKING LIKE THAT ARE YOU BROTHER?" Its papyrus "yeah why?" "BECAUSE YOU'RE GOING ON A DATE! AND MY DATING BOOK SAYS TO WEARE YOUR BEST CLOTHES ON A DATE!" I sigh "ok paps, but you have to help me then" I say "OF COURSE DEAR BROTHER!"

(Time skip brought to you by Error stealing your chocolate)

*SANS POV STILL*
I wait at MTT Restaurant patiently for her I'm nervous, but moments later I see her... She's beautiful! She's wearing a red dress with heels to match I can't stop looking at her, she smiles and sits across from me. "H-hey Tori" I say nervously "hello sans!" She replied "soo um... Here's the menu" I say passing it to her we order and talk a bit, we're having a great time till I hear someone whispering but not well...
Undyne: OMG THERE SOO CUTE!
Papyrus: I AGREE UNDYNE!
Undyne: THEY WILL NEVER NO WE'RE HERE AS LONG AS WE STAY BEHIND THIS CONVENIENTLY SHAPED POTTED PLANT!
Papyrus: NYA-HAHA!
I turn around and grab them both "get outta here before I give you BOTH a bad time!" I say as I let them go they quickly run back home, as I turn around I bump into Toriel she was looking at me with a quizzical look "I-I'm sorry t-tori I was jus~ I was cut off as she kissed me! OMG this was the best day ever!

Thanks for the request!