Lesson learned. Briana DeJesus declared that she will “never trust” her ex Devoin Austin again while venting her frustrations about her current coparenting situation on Twitter. Shortly after attending the Teen Mom 2 reunion taping last weekend, Briana, 24,  addressed how dissatisfied she is with both of her former flames as fathers. Briana claimed that Devoin “f–ked up big time” and it looks like she won’t be forgiving him anytime soon — and now, the 26-year-old is coming clean about what happened and is defending himself. Scroll through the gallery for details.