The actress said she feels like a "dog in a window painting" around Gaga, 29, who is set to play the lead role in the new season of "American Horror Story", reported Deadline.
Sarah, who has appeared in the last four seasons, said, "I am just such a super fan. I need to tone it down. I need to start playing it really cool.
"We all know that everybody who likes somebody, that they have to play a little hard to get ... I'm just like a dog in a window panting, waiting to be around her. It's just really pathetic."
"I'm in awe of her talent and I really think she's going to be an incredible addition to the show. I just think she's a perfect fit. I can't wait to have that experience (of working with her). But you know, I'm a fan before I'm anything else, that's for sure.