The 'Brokeback Mountain' actor recently fuelled rumours he is dating the 35-year-old actress, with whom he is currently filming 'Southpaw', after they were spotted out together on a number of occasions, reported Contactmusic.
"There is no denying the electric chemistry between Jake and Rachel. The attraction was instant. From the moment they started working together, Jake and Rachel just connected intellectually and emotionally.
"For Jake, Rachel is the complete package. She's incredibly smart and well versed in arts, politics and culture, but she's not a show-off. Of course, it helps that she's gorgeous," a source said.