Justin confirmed decided to end his relationship with Jessica Biel after falling in love for Mila, his Friends With Benefits costar.
But Kunis confirmed in January that her 8-year romance with actor Macaulay Culkin was over is holding back.
A source told Britain’s Now magazine, “She doesn’t want to be seen as a home wrecker”.
“She’s into monogamy so she ended it with Macaulay because she was attracted to Justin.
“But she doesn’t want to be another one of his conquests, so she’s asked for space.
“Justin agrees they should wait a while out of respect for Jessica.”
Mila recently insisted that she does this career ahead of having a good time.
She recalled, “I had to make a conscious decision about what I wanted to do with my life. During the show, I had attempted to go to college, but I realized that the traffic in L.A. made it too difficult for me to go to school at 6am and be back at work at 10am.
“I asked my parents if it was OK if I dropped out. They said OK, you can defer until after your contract with That ’70s Show ends. And then it ended. I realized for the first time that I couldn’t imagine doing anything else. So I had to make acting a career — to make smart choices instead of choices made for fun.”