Harry revealed details of the breakup last month in a YouTube video titled "I broke up with her".
He told viewers he wanted to "take ownership" of their split.
"I saw Francesca and I remember holding her... and I could feel how much she still loved me and I just didn't have that feeling anymore," he said.
"There was a big reason why I had to end things with Francesca because I was in a very dark point in my life."
Jowsey continued, "To find what we had on a reality TV show in the most insane experience, to being told that it has to be completely private for like a year, and then to have that relationship suddenly super public was a lot of pressure."
The couple got engaged over Zoom during the Netflix Too Hot to Handle reunion episode in May.
Francesca found herself in hot water recently when fans noticed her swimwear label looks surprisingly similar to Emily Ratajkowski's swimwear brand Inamorata.