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Imagine if Gus’s last scene on Better Call Saul was him walking up to Gale and kissing him...Am I the only one who feels some kind of romantic tension between Gus and Gale?
I wanna talk about what Peter Gould said about Gus, more specifically, how "Gus finds love".
In my opinion, it is either some flashback with Max, or some kind of metaphor - and he doesn't really fall in love with a person.
Having Gus be in a relationship, even with a man, is first of all, forced and probably completely unnecessary and contributes absolutely nothing to his character development and plot progression in both Breaking Bad and Better Call Saul - and so I (at least) can't think of any good reason for doing that.
In addition, given that Gus had a full blown revenge plan over the death of Max, extending to around 20 years of planning and executing (no pun intended), I just doubt that he has the mental capacity for another huge commitment that comes with having a romantic partner. He is a human, after all. Giving him a partner will have definitely meant that he would have had to let go of Max. Let go of his plan, or else he would most likely be putting his relationship at risk.
However, he definitely does not let go of anything, as we already know. He is completely OBSESSIVE about his plan. It is clearly the only thing in his mind - the reason behind his each and every move. He is scared shitless of Lalo - not for his life, but for his PLAN (according to Esposito himself). He is scared Lalo will ruin his perfectly-crafted, flawless plan of unleashing the hellfires upon the cartel, and especially Hector, for murdering Max right in front of him.
Therefore, I see no reason a romantic partner would be of any interest for Gus, given his biggest and... only motive.