Honestly, I can't see L-Elf getting involved in another romance before the end of this show without it looking really bad. The ending doesn't look like it either, and the poor girl would be in a position I don't envy
Maybe in the timeskip, though it would still lack development, and I wonder if it would benefit the plot at all to cram in another (unnecessary) romance- there's only a few episodes left.
Anyways, I also hope Haruto is honest with Shoko.. I don't think she'll take it badly, she'd probably tell him that Haruto is still Haruto or something among those lines and that's the end of discussion. It's Shoko.