Slater, 32, and Grande, 31, relationship began as an on-set affair during the shoot of their upcoming two-part film ...

Wicked actor Ethan Slater—who starred opposite Ariana Grande, Cynthia Erivo and Jonathan Bailey in his first major film ...

Days later, a source close to the situation told E! News Ariana was dating Ethan, who was also going through a separation ...