As it turns out, both Oppenheim brothers are single. While Jason Oppenheim made headlines about his split with Selling Sunset co-star Chrishell Stause, twin Brett Oppenheim also announced his breakup on the same day.  During an Instagram Q&a on Tuesday, Dec. 21, Brett revealed he was "single" less than a year after becoming official with Tina Louise. The Sugar Taco co-owner wrote on her Instagram Story, "Brett is my ex, but we remain very good friends."  Now, Brett has spoken out about where they stand. "I am grateful for you Tina. For your love, your laugh, your smile, and for our enduring friendship," he wrote on social media, alongside a...