Sammi Giancola, known to fans as Sammi Sweetheart, has called off her engagement to Christian Biscardi.The reality star confirmed the news in a video posted to TikTok on Monday. Sammi answered a number of fan questions in the video, including «Are you single?» and «Are you happy?» both to which she replied «Yes.»Rumors have been swirling for a while now that Sammi and Christian had split after fans noticed that the two unfollowed each other on social media in June.