"[We] aren't in any rush," The Bachelor star told guests at a Children's Miracle Network bowling event in Manhattan on Tuesday, People reported.
Lowe reportedly explained he and Giudici are just enjoying their summer together before focusing on their wedding plans.
While bowling, Lowe and Giudici were "really lovely, high-fiving even when Catherine's bowling ball went straight to the gutter," an eyewitness told the magazine.
The couple had also been spotted on a date at the Ainsworth Park in New York City on Monday night in which they were allegedly overheard discussing a potential pre-wedding honeymoon.
Lowe had previously mentioned getting married this summer was a possibility for the couple.
"We've kicked around some ideas. It could be this summer," Lowe told People in March shortly after The Bachelor's seventeenth-season finale aired on ABC.
While the reality dating series was airing, a source told Life & Style in February, "Sean and his fiancee are happy and committed to each other. They're planning to get married before the end of the summer."