Evelyn Lozada admits that she still loves her estranged husband Chad Johnson "more than anything," but is "afraid" of him and believes he "needs to get help" in her first interview since he head-butted her six weeks after they were marrried.

"It's the hardest thing in the world to walk away from someone that you really love," Lozada told Amy Robach for an interview on "Nightline". "But you have to walk away because I have to protect myself."

The estranged wife of the NFL player describes in detail the moment she realized she was head-butted by him:

"The next thing I know, he grabbed me by here [pointing to her head] and he head-butted me," Lozada said. "I felt blood coming down my face... and I looked at him and I said, 'You just head-butted me?' And it just -- everything just felt if it was in slow motion."

The 36-year-old then described the moments following the assault.

"He got out of the car, really, really quick and ran into the house, and I said to myself, 'I need to get out of here.'"

Lozada ran to a neighbor's house then went to a local hospital where she received six stitches for lacerations on her forehead. She said she will not get back together with Johnson after a six-week marriage but wishes him the best.

"I believe he loves me. I believe he needs to get help," she said. "He's a good guy that made a bad choice. He loves football and he's very driven and a great dad. He made a bad choice that destroyed his life, and I hate that I'm connected to that."

Lozada's first interview since the assault with ABC News' Amy Robach will air on "Nightline" on Friday, Aug. 31 at 11:35 pm EST on ABC.

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