Trying to find Wolverine and the X-Men paperbacks that deal with the relationship Toad built with Husk, up to the point where he joined the Hellfire Academy with her and Quentin Quire, and where the two broke up shortly afterwards.
The complete list of Wolverine and the X-Men issues featuring both Toad and Husk can be obtained with this Google query (16 results), however that doesn't mean they will interact.
The issues where they do interact, however, are listed below. For the sake of readability, all panels are linked to but not included, as it would distort the bullet list.
Issue #9: Toad meets Husk after saving someone from a fall (by catching him with his tongue). Husk is impressed;
Issue #14: Toad and Husk attend the same meeting, and Toad hopes to keep one of her sheds, and fantasizes about having tea with it. Up to the reader to judge how creepy that is;
Issue #15: Toad and Husk spend some quality time in the nice caves miles below the school;
Issue #30, #31, #32: Toad joins the Hellfire Academy, along with Omega Kid (Quentin Quire); there, he's still trapped in a janitor role; Husk breaks up (of sorts) with him after he "embarassed" her upon suggesting some Hellfire kids don't want to be bad guys;
Issue #35: Toad shreds Husk's layers (as she was going berserk), which causes her to loose her Hellfire Academy memories, along with Toad's love (although it's revealed she's willing to give it a new shot in issue #41).
They're all collected in paperbacks, either the big fat one collecting all 43 issues of the Wolverine and the X-Men run (Amazon link) or shorter volumes collecting 5 volumes each, such as this one for the "Hellfire" arc (that is, issues #30 to #35 - which is probably the one in which you'll see the most of Toad/Husk interaction).