Why not just translate it normally into simple English for the time being, and then challenge it again after some time?
Half?Hmm?We wish to visit the hot springs, but that be not Our sole Desire.In summer We did embark together on an Excursion to the beach; it was most fun, and merry, for each...I can't win against your onsen spirit...You're really hankering to go, huh.Ay, half.Most true, forsooth; yet, 'twas but merely half the tale.For We went with Thee, and Thou with Me.This doth fill Us with great Joy, yes indeed!♡