The actress split from 'Twilight Saga' star Peter Facinelli in March 2012 after 11 years of marriage and with whom she shares daughters Luca, 15, Lola, 10, and Fiona, six.
Garth, 41, met the CEO of the San Francisco-based company called Planes, Trains and Automobiles through mutual friends and they have been quietly seeing each other for a few months, reported Us magazine.
"They met through a friend. They've been seeing each other for a couple months now. They are great together. Super sweet," a source said.
Since splitting from Facinelli, who has been dating actress Jaimie Alexander since November 2012, Garth has dated a number of men including photographer Noah Abrams and indie-musician Jeremy Salken.
The former couple, whose divorce was finalised in June, sold the property they used to share with their daughters in Toluca Lake, Los Angeles, for USD 3.99 million to 'The Big Bang Theory' co-creator and executive producer, Bill Prady last month.
