Is Alfred Ashford gay

No. He was just so lonely, he created a split personality of his sister.

Alfred Ahsford already had an unstable mind, though which Alexia had settled down while she was with him. Though when she entered cyrsostasis, he became embittered, sadistic and psychotic, Over the years, however, due to his already unstable mind and to the fact nobody ever expected him to be as smart as Alexia was, he went insane, creating a dual personality having a fragment me the normal Alfred and the other Alexia's.