This was so nice!! (maybeee it's even 4.5 stars, I'm not sure)
I have a lot of Feelings and Thoughts and I'm gonna try to word them.
I really loved the worldbuilding! It's a romance set during a nuclear winter, and the worldbuilding is simple enough not to take over the story and realistic enough that I was like: yeah well that definitely would happen if we were thrown into a nuclear winter. Basically: most human beings are shitty, and the world 'ending' would make it so much worse. I did asked myself a lot "but how cold is it really??" and that frustrated me a little bit but it's a minor detail.
I think this book really filled a bit of the void of my deep desire for more stories about 'normal' people going on with their lives in SFF settings (apocalypse, space opera, high fantasy, etc.). SFF without the high-stakes of saving the world and all that is really nice sometimes and it's kind of rare. It felt so good to see the life of three people struggling during a nuclear winter, but their struggles are personal and intimate and not world-changing, and I *loved* that. Like, I really really loved that.
The romance itself was really nice. Honestly, in a contemporary setting, I would've been like "oh this went too fast for my liking" but I think it works extremely well with the setting. I actually felt like the apocalyptic setting allowed the author to explore emotions that are different from the usual romance: how much you cling to the few things you care about, how romance seems like something frivolous when you should focus on surviving, how you don't trust people anymore but once someone trustworthy shows up, you don't want to let them go. It was just really, really interesting to me.
The cast was small (but like, you don't keep 53 friends during an apocalypse, folks) but the characters were interesting and believable. I loved Finn's sister, Siobhan! It was great to have a strong, important brother/sister relationship aside from the romance. Both Finn and Spencer were great characters. I would definitely be a Finn in these circonstances (honestly in these circonstances I would probably be dead though): mistrustful, hard on himself, having a hard time to let himself hope. At the beginning, I thought Spencer wasn't... believable. He was too kind, too great. But he grew on me and I could understand him better when he said that thing about holding onto the very few things you care about.
My ace self was in a period where my sex-aversion was higher than usual so I kind of read the (only) sex scene quickly, but that's 100% on me anyway!!
Overall, I really liked this. Worldbuilding, characters, plot, everything was super well-done. I was actually glad this was a just a novella because otherwise I would have stayed up a lot later than I already did.
TW: violence/blood, gunshots, fire/explosion, serious illness, explicit sex.