Shanna Moakler has tried desperately to present a happy and loving relationship with her on-off boyfriend, Matthew Rondeau, but Teddi Mellencamp may have just blown her cover. The Real Housewives of Beverly Hills alum says she and the ex-wife of Blink-182’s Travis Barker got close while filming the currently airing season of Celebrity Big Brother. Teddi was eliminated first, but Shanna is still competing on the popular CBS reality game show. Upon her return home, the 40-year-old ex-Bravolebrity claims the 29-year-old model slid into her direct messages on Instagram to trash the 46-year-old for…
