Falling in love with a Dance Teacher?

Just had this scenario pop into my head and so no idea if anything like this even exists, but has anyone ever read a story where an MC is preparing for his first wedding dance or is trying dance lessons as a new hobby with his current partner, and ends up falling for his dance teacher instead?

Ultimately looking for a HEA, but don’t mind if there’s some internal struggling with feelings on one or both ends, or if the pair go behind a SO’s back for a while. Bonus points if the SO is awful 😂😂😂