Haha, I'm glad it's worth replaying! Cove as a person consists of multiple different parts that are determined separately and all combine together to create who he is overall. Cove's current relationship with the MC and his past relationship with the MC get put together to form a dynamic. If they've been crushing on each other for years he's comfortable with those feelings, if this is a newer development he's much less sure of himself. The quiet part of his personality that you got doesn't come up in the demo, since he has so few lines. But you will start to see it once we expand the demo on the launch of the Kickstarter :D
[This somehow got posted twice, so I deleted the other comment, aha]