Jake Pavelka and Vienna Girardi announced the end of their engagement Tuesday, amid rumors that Vienna was cheating with “Greek” star Gregory Michael.

“Jake and Vienna have split and appreciate the respect for their privacy at this time,” Pavelka’s rep said in a statement.

Sources from “The Bachelor” told TMZ that Jake ended the engagement because he thought Vienna was cheating on him with Gregory after she flirted with him at a recent event.

“The accusations of me cheating are completely fabricated. 100% False,” the 24-year-old tweeted on Tuesday.

According to an interview in Star magazine, Vienna ended the relationship and blames Jake for the split.

“We haven’t been intimate in months now,” Vienna says. “More than four months. At first his excuse was that he was fasting. The second excuse was that he didn’t feel like it. And the third excuse was that he said that he felt that I wouldn’t understand that he wants to wait until marriage, even though I told him I’d support him. Then the last excuse was that we fight so much that I push him away. I was like, really — which excuse is it? I literally have been living six months with this guy who won’t be intimate with me!”

Vienna’s stepmother Lisa also claims the break up was Jake’s fault, telling TMZ, “I don’t think [Jake] ever really loved her … I think he picked her because she is a dramatic person and it was good for the ratings…In real life, they never kissed, didn’t have a romantic relationship and he never told her that he loved her.”

Jake filmed an episode of “Drop Dead Diva” in recent days, telling the writers that he and Vienna “had a great relationship,” however, a source told HollywoodLife.com the couple broke up a month ago.

Meanwhile, Vienna was seen dancing and holding hands with Gregory Saturday night at the Reality Cares CHOC Children’s Hospital Prom. (see video)

More photos below:

photo: Fayes Vision/WENN;  Twitpics

Filed under: Celebrities, Celebrity Break ups, Reality TV