Breaking News: Miley Cyrus Reacts to sister dating her mom’s husband…see more

“She confronted her mom about it. She thinks it’s a strange situation, but she loves her mom and wants her to be happy,” the insider adds.

Representatives for Miley, Tish, Noah and Purcell did not immediately respond to PEOPLE’s request for comment on Sunday.

A rep for Noah previously had no comment this week regarding the alleged relationship between her and Purcell. Earlier this week, a source told PEOPLE that the younger Cyrus sister “was offended” over her mom’s relationship with the Prison Break star.

The insider claimed that Noah and Purcell had previously hooked up and stopped seeing each other before the actor and Tish had pursued their own relationship.

“Noah and Dominic were seeing each other in a friends with benefits way, off and on.

They stopped seeing each other and then Tish started something up,” the source said, adding that “Tish knew he had been seeing Noah.”