The pop star “lighting up” does not mean interest. Depending on who it is, I can see someone just being kind to her. The old, “yeah that sounds great” with no intention of doing it.
This doesn’t strike me as an A list property that someone like Gaga or Ariana (who I initially thought) would touch. I think it would be a bad career move for either and wouldn’t pay well for the amount of work required. Ariana is very funny and can be a delight. Gaga seems to skew to melodrama so she doesn’t seem the obvious choice.
I still think Annaleigh, Lesli M or Kritzer or someone in that vein would work best for this property.
"The sexual energy between the mother and son really concerns me!"-random woman behind me at Next to Normal
"I want to meet him after and bang him!"-random woman who exposed her breasts at Rock of Ages, referring to James Carpinello