"Ben and Lindsay have known each other for a couple of years," a source told ET. "Ben has been on SNL five times and has met Lindsay while hosting the show. It is early on in the relationship but they are very happy together."
The source went on to explain that the pair struck up a romantic relationship sometime after Affleck and Garner announced their separation in June 2015.
Shookus was previously married to fellow SNL producer Kevin Miller, however the two divorced in 2014 after four years of marriage. Shookus and Miller share a daughter. Affleck is also the father of three children -- daughters Violet and Seraphina and son Samuel -- whom he shares with Garner.