Complex sentence: After partnerships with two dance partners, Cacace and Simone (who had the same dance teacher in London) were both looking for partners and they decided to try out in 1994, and they have been dancing together ever since.
Split into simpler sentences: After partnerships with two dance partners, Cacace and Simone (who had the same dance teacher in London) were both looking for partners. They decided to try out in 1994, and they have been dancing together ever since.