Miss Universe 2018 Catriona Gray said she remains open to working professionally with ex-fiancé Sam Milby, provided the project is the right fit.Speaking to reporters at designer Haydee Garcia’s “Petals & Poetry” fashion show, where she served as the primary muse, Gray briefly addressed the possibility of reuniting with Milby onscreen despite their highly publicized breakup.“Siguro if it’s a good project. If it’s a project that’s fit for me, tha…