Where does Gale go after mockingjay??

Gale visits Katniss before Snow's death and gives her a sheath with one arrow to shoot at Snow. Katniss asks if it was his bomb that killed Prim. Gale isn't sure and tells her to shoot straight at Snow before he leaves. While Katniss can never be sure that it was Gale's trap that did it, she realizes she will never be able to look at him the same way again, and lets him walk away without a word. Gale later moves to District 2, where he secures a "fancy job" working for Panem's new government. Katniss finds herself relieved by this instead of feeling any longing or anger, as she herself believes that Gale will forget her and will soon be "kissing another pair of lips."