GLEE star Mark Salling has been sued by an ex-girlfriend who claims that the actor sexually assaulted her by forcing her to have sex without a condom.

Roxanne Gorzela states that in March 2011 the actor intentionally had unprotected sex with her despite demanding he use protection.

Salling plays bad boy Puck on the hugely popular musical television series.

According to TMZ, the pair had been dating since September 2010.

Gorzela says she became "overwhelmed with anxiety" after the event and was worried that she may have contracted a sexually transmitted disease.

When he didn't return her calls, she turned up at his house to ask him if he had been tested for STD's and he reportedly pushed her, causing her to hit her head.

Gorzela also says she suffered "severe and substantial mental and emotional distress, humiliation, fear, apprehension, anxiety and anguish" as a result of the incident.

She is seeking unspecified damages.

Salling's rep Janice Lee told E! News: "There is no truth to this. We turn the rest over to Mark's attorneys and have no further comment."

She added to the Daily Mail: ''It's the textbook case of a disgruntled girl looking to cash in on a TV star's success."