You can always request scenarios. This was requested by someone on Quotev.

Marinette:

She will watch you in joy as your being silly, dancing and singing around the room. When you spot her you will ask her to join. She will be fast to decline but have no choice but to join when you drag her and make her dance. At first she will be shy but then enjoy it and dance and sing along.

Ladybug:

Since she is more confident as Ladybug she won't be shy to dance with you and sing along the music. During the fun she will walk off to go look at the city to make sure there is no danger then join in the fun again.

Adrien:

He will be laughing and enjoying the show. The first time you were caught you got embarrassed and hidden in your room so Adrien assured you not to be embarrassed because it was very adorable. Sometimes he will join in the fun but he would rather just watch you having fun.

Chat Noir:

He will watch, first hiding since he's not sure how you will react if you catch him staring but eventually he can't help but join in the fun of singing and dancing to his favorite songs.

Alya:

She will film you and laugh whenever you almost trip over your own feet or try to hit the high notes of a song and fail. She has many videos of you singing and dancing for fun on her laptop. She likes to watch them when she's having a bad day.

Nino:

He will be the one who started this crazy fun. He will be blasting his and your favorite songs, singing and silly dancing to them, telling you to join. When you do both will be crazy dancing and singing around the room, not caring who is watching. He will sometimes teach you little dance moves he learned recently.

Chloe:

She will chuckle and tease you about it. When she sees your embarrassed face, she will feel a bit bad so she will try to make you feel better by saying she can buy you a private dance/vocal teacher. Which usually just makes you feel more shitty because that basically means your dancing is shit.

Nathaniel:

He will just draw you as your singing and dancing to your favorite songs, having fun. When you ask him to join he will decline and continue drawing you. He would like to join but he knows he's shit at dancing and singing and too shy to do that in front of you.

Luka:

He loves to play songs and listen to you sing to them or watch you dance along to it. When your finished dancing he will chuckle and ask if you had fun. He knew you had fun but he just liked the smile you give him when you give him an excited yes.