The 23-year-old actor is said to have offered support to the actress, who dated Pattinson, 28, until last year following reports he is planning to tie the knot with the 'Two Weeks' hitmaker, reported Hollywood Life.
Taylor starred alongside both Stewart and Pattinson in the 'Twilight Saga' movie franchise and is said to have contacted the brunette beauty, who apparently cheated on Pattinson with married director Rupert Sanders in 2012, as soon as he heard the news.
"He found out about Rob's engagement just like everybody else, on the Internet, and as soon as he heard about it he reached out to Kristen. He's been there with her throughout all the ups and downs with Rob and totally understands how the news is playing with her head. He's always been like her rock and visa versa," a source said.