Spain uses his fusososo charm successfully on Romano -- the only thing is, it works too well! Romano becomes ridiculously happy and cuddly permanently. At first, Spain loves the change and being able to pet and dote on Romano without getting punched in the nuts but after a while… After a while Romano starts acting really possessive and scary and goes Belarus on Spain’s (fine) ass. Cue Spain’s epic quest to reverse the spell and bring back his grumpy, eternally PMSing Italian.

Bonus--Romano and Belarus share stalking tips.
Bonus 2--One of the reversing spells Spain tries summons Russia.