Michael Lohan's on-again-off-again girlfriend/fiancee Kate Major was the victim of Lohan's alleged abuse last night at a West Hollywood apartment that found Lindsay's dad arrested for three felony charges and left Major injured, a source close to the couple tells X17online exclusively.

    "Kate is in pain right now. She's bruised and sore -- not serious enough to really need to go to the hospital, but she's not feeling well at all. And mentally she's a wreck. She loves Michael and doesn't understand why he would hurt her," the source tells X17online.

Major, a former Star Magazine reporter who was thrown into he spotlight when she started a relationship with one of the subjects of her stories -- Jon Gosselin -- has had a tumultuous relationship with Lohan since they started dating in January last year. She accused Lohan of domestic violence back in July, claiming he shoved and kicked her. Major then packed her bags and fled to her parents' home in Florida.

The two were drawn back to each other, however, and reunited shortly after the incident. But apparently the couple's problems didn't go away ... the source tells us Kate is "scared" of Michael and "sick of his verbal abuse."

The source goes on to say:

    "Kate loves Michael but she doesn't trust him. These two are up-and-down but this may be the final straw for Kate. I don't think she'll tolerate Michael getting physical with her. It's over between these two; they have no future together."