Has Joe Giudice been cheating on his "Real Housewives of New Jersey" star wife Teresa?

This week it was reported that Joe hit on Teresa's sister-in-law, Melissa Gorga, went into a cab in the wee hours of the morning with an unidentified woman and now, the National Enquirer added that Joe's mistress is a 25-year-old busty brunette college student. 

During the now infamous incident on an episode of "RHONJ," Joe was on the phone with whom many believed to be the other woman. When Teresa went to go see where her husband was, he told the person on the other line, "Here comes my bitch wife ... she's such a c***."

According to the Enquirer, the person on the other line was the college student. 

On part two of the "RHONJ" reunion, he said he was speaking to Albie, a longtime friend of his and possible employee, though he did not make the latter clear. He said he was "taking care of things back home" and laughed off all cheating allegations made against him.

"If I was talking to my girlfriend, I probably would've ripped my mic off and threw it in the bushes," he said. 

However, Joe and the alleged mistress were spotted at the Iron Bar in Morristown, N.J. getting cozy. 

"Their behavior was highly inappropriate, es­pecially for a married man being out late at night with such a young woman," a bartender told the Enquirer of a night they were there this past summer. "They came in as part of a small group, but they only had eyes for each other and got very touchy-feely. It ap­peared to be a date with their friends running inter­ference."

The parents of the Caldwell College student spoke to the Enquirer. They said their daughter was not intimately involved with Joe, but did confirm that the two do socialize at the Iron Bar. 

So maybe Joe's phone call on this season's "RHONJ" episode was a bit work related? The rumored mistress' mother said, "They know each other through work" and of Joe's "highly inappropriate" behavior, she said, "That's just Joe being Joe."

RadarOnline reported that on Sept. 23, Joe was at Harrah's Resort chatting it up with another woman and was said to have left with the unidentified woman in a cab.

"Joe's friend came over and she sat on his lap and then Joe started rubbing her face and stroking her hair," Georgia resident Rosie Jones told RadarOnline. "Joe had his arm around the girl and as they walked off to grab a cab together I heard his friend say something like, 'Life is great.'"

What else has Joe allegedly done to Teresa?

"When Melissa started dating Teresa's brother, Joe [Giudice] would flirt with her and check her out whenever Teresa wasn't looking," a source told InTouch. "Melissa always told me he was a 'creep.' He's so disrespectful to Teresa, but she turns a blind eye."

The publication also reported that Joe enjoys flirting with Melissa because it makes Teresa insecure and according to the source, "her biggest fear is Joe will lose interest."

"Joe got a kick out of flirting with Melissa. He doesn't care - he thinks he's an attractive guy. He always complimented the way [Melissa] sings. He told her she makes the most beautiful pregnant woman. He complimented her style, too," the source said. 

On part two of the reunion show, Jacqueline Laurita accused Teresa and Joe of having an abusive relationship. She also said Joe cheated on Teresa multiple times.

"If we're being honest, he calls her those names and she calls him names and they punch each other. You guys get into some pretty bad [fights]. I've heard every name in the book from you two," Laurita said. "You told me your husband cheated on you several times. Honey, you've caught him with the secretary, the babysitter. You asked me what you should do, because my ex-husband cheated on me."