Article continues below advertisementChristina Haack has fans talking after she stepped out wearing a noticeable ring - and it quickly sparked engagement rumors about her relationship with boyfriend Christopher LaRocca.On Thursday, March 12, the Christina on the Coast star attended an HGTV event at the famous Bachelor Mansion, where she served as a guest judge for Bachelor Mansion Takeover. For the occasion, Haack stunned in a strapless moss-green dress. As she posed at the event, a silver ring on her finger caught the light - and immediately grabbed attention.