"[Kevin is] the first guy she's dating since Roberto," a source close to Fedotowsky told Us, explaining the reality TV star had been very focused on her career rather than finding love again following her split from Martinez.
"Kevin makes her really happy."
Manno, 29, reportedly got married in 2011 but divorced his wife last year.
Fedotowsky, who had also appeared on Jake Pavelka's season of The Bachelor, told the magazine in January she hadn't been on any dates but was becoming more open to the idea of giving out her number to guys.
"I needed this year. I needed it to make sure that I was really OK with me -- and I am! I really feel happy with me. I think that's the most important thing, and now I'm ready to find him," Fedotowsky said at the time, adding that she wasn't, however, interested in dating any men from The Bachelor family.