The short answer is that there is no publicly verified information indicating that the T-Mobile guys are a couple; they are company representatives and actors whose on-screen pairing is part of scripted advertising, not a confirmed real-life relationship.
This article explains who the T-Mobile guys are, distinguishes their commercial roles from personal lives, reviews notable public appearances, and outlines why their on-screen chemistry is intentionally crafted storytelling rather than evidence of a private relationship.
