Robert Pattinson reportedly wrote love songs for girlfriend-of-three-years Kristen Stewart before he was blindsided by her affair with married director Rupert Sanders.

Pattinson told Black Book in an interview that he was writing songs about his girlfriend and Twilight co-star, the U.K.-based Daily Mail reports. The British actor before becoming a big name star used to sing to tiny crowds at various venues in Los Angeles.

Photos surfaced on Tuesday showing Stewart and Sanders, who is the father of two young children, kissing. Sanders, 41, is an up-and-coming director who directed Stewart in the movie "Snow White and the Huntsman."

Reportedly 26-year-old Pattinson moved out of his Los Angeles home with Stewart after the scandal broke out. Stewart has also reportedly moved out of their home. In her public apology issued this past Wednesay, she admitted to cheating and says, "I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."

The separated couple is also not on speaking terms, a source told People. It is unclear how Sanders is doing with his own relationship with wife Liberty Ross, a model and actress.

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