Yeah, I see your point here. The way I see it, Calypso will only be romanceable after a huge plot is revealed (
like she's a "real" person or something like that)) because for now you (and Orion) view her as a "weapon" or "IA" created by the founder (it doesn't mean Orion doesn't care about her but there's a huge step between seeing her as a real person or not).
Maybe in 0.6 we will have a hint of why they share a bond (
direct link with the 100% compatibility of Orion ) and
why he has the capacity to teleport himself from the real world to her like we saw in 0.5 during the trip with Luna and her father (more real than real life yeah)