Rogue & Gambit
... that though in a romantic relationship since the 1990s, the titular characters of the 2018 X-Men miniseries Rogue & Gambit had never previously headlined a comic book together?
... that though in a romantic relationship since the 1990s, the titular characters of the 2018 <a href="./X-Men" id="mwBIc" rel="mw:WikiLink" title="X-Men">X-Men</a> miniseries <i id="mwBIg"><b id="mwBIk"><a href="./Rogue_&amp;_Gambit" id="mwBIo" rel="mw:WikiLink" title="Rogue &amp; Gambit">Rogue &amp; Gambit</a></b></i> had never previously headlined a comic book together?