But then this isn't the Kase-san discussion, so I fear we've moved off-topic quite a bit.
Also, to the person who brought up Christianity, that's probably got little to do with it given Christianity isn't all that big an influence in Japanese culture as far as i know.
Also also, asexual lesbians exist. Or sex might simply not be a priority for that couple and they get on just fine with romance. Spending time together, kissing, being an exclusive couple, etc.
Also also also I didn't have anything else to say but wanted it to look like I was contributing.