It could be played for jokes. Isn't Shadowheart's "sex scene" just giving the player a kiss? Maybe it'll be like, the player character is very obviously coming on strong and Minsc is just completely oblivious to it.
As far as I know, even the Romantic Encounters series of Baldur's Gate mods shied away from giving Minsc an explicit scene. There's just something... unspoken, there.
