The actors ended their year-long romance due to distance, PEOPLE has confirmed
The long distance – Williams, 32, is based in New York City, while Segel, 33, primarily resides in Los Angeles – was the reason behind the breakup, the source adds.
Earlier in the month, the actress told In Style that she cherished public support of her relationship.
“If people are happy about it that makes me feel good … Any kind sentiment that the world can feed back, well, I won’t turn it down,” she explained.
Reps for the actors have not commented.