Gotta love that Jesse James guy who is (was) Sandra Bullock's husband.

Not content with wooing and wedding the Oscar-winning star, he starts an affair on the side with Michelle 'Bombshell" Magee, a tattoo lady and stripper.

While Jesse was in Atlanta with Sandra filming the Oscar-winning role in "The Blind Side," he hooked up with the Tattoo Lady who has (shock horror) now spilled all to In Touch magazine about the size of his you-know-what, (she called him Vanilla Gorilla, because he was so "well-endowed") and his habit of not wearing underwear and his incessant need for the Tattoo Lady.

Here's Michelle's poetic account of how they met: "I was like, 'Holy s**t. It's really Jesse James.'"

After taking Michelle on a tour of his garage, Jesse brought her into his office and locked the door. "We ended up on the couch," she says.

"He wanted to watch movies, but I asked him, 'What's going on with you and Sandra?'" Jesse was evasive. "He said, 'She doesn't live here. She has a house in Austin. She is filming, and I can't talk about it.'"

Assuming he and Sandra were separated, Michelle continued talking to Jesse, she says, and then, "We had intimate relations." Michelle says she and Jesse had sex "two or three times that night -- and began what she believed was a serious relationship, texting each other several times a day, and meeting up for sex at least twice a week for the next five weeks.

"I would never have hooked up with him if I thought he was a married man," Michelle told In Touch in the exclusive interview. "He gave me the impression they were separated."

Yeah, right.

Sandy, dump this jerk asap.

Guinness-march2019