u/Icy-Buddy6286

Looking for a book that I read in elementary school about a woman who’s a loner she wears layers of wool and a heavy leather jacket everyday despite how hot she is and I can’t remember the reason why. She ends of meeting a boy who’s on the run from these 2 men I believe and he’s actually from another planet and I remember them being in love and her thinking it was destiny because she felt she had been training for the climate that was his planet or something but they both end up getting caught and brought back to this other planet and she wore this one side to control her temperature when they brought her back. Idk I think the book was maybe orange with lines on it 1 or 2 worded title and that’s the best description I got I hope someone might know!