It definitely felt like they were implying that Angie and Livia were romantically in love, especially given that Leon is now relying on their love enabling them to use the royal ship. However, Angie states that she only loves Leon. I wonder if this is that Japanese thing where they sometimes ~sort of~ recognize homosexual love, but as less serious or not quite as real as heterosexual love. So it's like, Angie and Livia are in love, but it's not like full blown romantic love but more like a highly intimate friendship with romantic undertones (or so the author perhaps views it). But if she's gonna seriously marry and commit, it's gotta be with a dude.