Ed Swiderski Cheating on Jillian with Lindsey Johnson and Bethany Steffen!

According to the new issue of Us Weekly, Bachelorette Jillian Harris' new fiancé Ed Swiderski carried on relationships with two different women - Lindsey Johnson and Bethany Steffen, even while filming the show.

Both women, Lindsey Johnson and Bethany Steffen, claim that Swiderski was stringing them along while he was wooing Harris on the ABC reality dating show, and that he continued to do so even after he and Harris got engaged.

Just eight days after he proposed to Jillian on The Bachelorette finale - Ed slept with Lindsey Johnson. A day later, he supposedly tried to bed a different woman, Bethany, texting her to "bring beer and condoms" over to his place.

"Ed's not worth my time, but if I can help someone avoid heartbreak, I'm gonna do that," Bethany told the UsWeekly.

"Lindsey and I are both smart girls, and Ed just has this way of making people believe what he wants. Jillian needs to be careful."

Adds Johnson, "I feel gross, used and completely violated. It shocks me that he was able to do something like that to me."

But, a very forgiving Jillian says she understands that with previous relationships "feelings and emotions are involved. I know what it feels like to fall in love with somebody and to be in love with somebody [while] they are in love with somebody else."

"I feel so awful, but since we've been home and since we've been engaged we've been exclusive and he's done nothing wrong." Jillian says she and Swiderski are dealing with this "bump in the road."