Kyle Richards’ social media activity is being called into question. Months after separating from her longtime husband, Mauricio Umansky, internet sleuths uncovered that The Real Housewives of Beverly Hills OG “liked” an Instagram post about micro cheating. The discovery comes as rumors continue to swirl about whether the real estate broker stepped out on their marriage while they were still together. The account @facereality16 pointed out how Richards previously hearted a post where influencer Sameeksha Dhoundiyal said micro-cheating can include “secretly messaging someone, deleting messages, …