OA’s “new romance” in FBI didn’t end in a dramatic breakup right away—it actually evolved into a longer, complicated relationship arc that eventually fell apart after multiple life-or-death situations and growing emotional distance.

OA (Omar Adom Zidan) was introduced to a girlfriend named Gemma Brooks, and at first, things looked surprisingly stable. He was genuinely happy with her, even telling Maggie that Gemma made him feel “different” and grounded in a way his dangerous job rarely allowed. Their relationship was portrayed as warm, supportive, and outside the usual FBI chaos.

But the problems started stacking up quickly.

One major turning point came when their relationship was directly pulled into a high-stakes case. During a train hijacking incident, OA and Gemma were caught in a violent situation where she was even shot and seriously injured. That event changed everything. Even though she survived, the trauma created emotional strain between them, especially because OA often struggles to separate personal feelings from his job risks.

After that, the relationship never fully recovered its original balance. Gemma became increasingly affected by the danger surrounding OA’s life, while OA himself began emotionally withdrawing. Even when they tried to keep things going, there was always a sense that the job—and everything that comes with it—was pulling them apart.

Eventually, the show confirmed what had been building for a while: OA and Gemma broke up. Their split wasn’t framed as explosive or hostile. Instead, it was portrayed as a slow realization that their relationship couldn’t survive the constant exposure to violence, trauma, and secrecy that defines OA’s world.

OA later admitted to colleagues that part of the issue was emotional distance and timing—he often couldn’t fully open up about his experiences, and that created a gap that kept widening over time. Even after surviving major threats together, the relationship simply didn’t return to what it once was.

In the end, OA’s romance didn’t end because of betrayal or a single mistake. It ended because the life he lives as an FBI agent makes normal relationships extremely difficult to sustain. The combination of trauma, secrecy, and constant danger slowly eroded what he and Gemma had built.

So while OA’s romance began with optimism and genuine connection, it ultimately ended quietly, shaped more by circumstance than conflict—leaving him back where he often is emotionally in the series: focused on his job, but more guarded in his personal life.