I would love them to acknowledge their feelings before the separation, but I am not hopeful. I think if the first kiss happens before their separation, it might be on impulse or due to drunkenness and most likely their separation is what will fully cause her to acknowledge her feelings.
If the pregnancy is included into the plot, then I'm inclined to lean towards them being intimate before the separation, but again probably on impulse or due to drunkenness...... Like say, on a night their wearing masks during a festival.
But I would LOVE for them to get together within the first few episodes and happily be wrong.