Miley Cyrus and Patrick Schwarzenegger
Patrick Schwarzenegger's mother was "disgusted" by Miley Cyrus's birthday celebrations.
Maria Shriver - who, along with Arnold Schwarzenegger, are the parents of the 21-year-old actor - is reportedly "very worried" about how her son is being influenced by his new girlfriend after seeing pictures from her 22nd birthday party.
A source explained: "The birthday party with all the penis pictures disgusted her. That was the worst thing Miley could have done.
"Maria is very, very worried about the influence Miley's having on Patrick. She fully believes that you become who you surround yourself with and she's always been so happy with the friends Patrick chooses, she never saw this coming."
Despite Maria's dislike for Miley, she may struggle to separate her son and the 'We Can't Stop' hitmaker after a source revealed that Miley has always been his "celebrity crush".
Patrick reportedly can't believe his luck that his "dream" is coming true.
The source told HollywoodLife.com: "Miley has been his celebrity crush forever, so he is now living a dream come true.
"She is so cool and he loves hanging out with her. They have so much fun together."
Meanwhile, Patrick is reportedly "falling hard" for his new beau and is hoping their relationship will develop into more.
Another source recently revealed: "He is definitely falling hard for her and she really is liking all the attention he is giving her.
"This is something that is going to last."
When asked if the relationship would develop further, the source added: "It could definitely lead that way and if Patrick gets what he wants it will, but they don't say 'I love you' to each other yet. Way too early!"
Tagged in Miley Cyrus Maria Shriver Patrick Schwarzenegger