Steven Tyler's fiancee warned she'll cheat if he does

Steven Tyler‘s fiancee warned she would be unfaithful if he ever cheated on her.

The Aerosmith rocker who has finally confirmed speculation he is to wed Erin Brady has a famously wild past but his partner of seven years insisted when they first got together that she wouldn’t tolerate bad behavior.

“I just said, ‘Hey listen, if you play, I’m gonna play.’ He didn’t really like it when he was on the other side of that scenario,” Erin said.

Twice-wed Steven, 63, also admitted he is “ashamed” of his past behavior and regrets how much upset he caused his ex-wives Cyrinda Foxe and Teresa Barrick.

“For all the divorces I’ve had, I hurt those girls deeply, and there was some behavior that I’m ashamed of and I shouldn’t have done. I don’t want to hurt anybody again…” he said.

The Crazy hitmaker is particularly regretful of the fact he “abandoned” Cynthia and their daughter Mia to go on tour.

“My heart is still broken that I did that,” he ssaid.

Despite his regrets, Steven who is also father to actress Liv Tyler, whose mother is Bebe Buell, and 22-year-old daughter Chelsea and Taj, 19, his kids with Teresa admits he would like to “screw” every woman he meets, but refrains from doing so in order to protect his relationship with Erin.

“I may come off as a sexual animal, and I definitely am on stage, because trust me, I feel it myself,” he said.

“But I’m not really, really that. I’ll sing about it, I put it out there but I’m not. I’d like to go on a schtupping spree and screw every girl I see, that would want to have me, who wouldn’t? But I don’t. I want (Erin) for my own, and if that’s gonna take that away from it, I don’t do it.”