I dug through bookstores, online marketplaces, and fan forums trying to pin this down, and here's the short version from my hunt: there doesn't seem to be a widely distributed, officially published English translation of 'ishq e aatish'.
Most of what I found were partial efforts—fan translations, blog posts, and snippets on social platforms where readers lovingly translate chapters for each other. Those can be great for getting the story, but they vary wildly in quality and completeness. If you're looking for a polished, publisher-backed English edition, I couldn't find one available through mainstream channels like Amazon, major indie bookstores, or library catalogs.
If you're impatient like me, a workaround is to combine a fan translation with machine translation for missing sections, or hunt down a romanized Urdu version and use an online diction/phrase guide. I always try to respect copyright, though, so I prefer supporting official releases when they exist. Either way, the world of online readers has kept the book alive in English fragments, and that dedication always warms my heart.