Hey lovely people! I'm new, I'm bustoparadise and I'm a Sera fan!
Quick story about my first playthrough: so, DA:I has just dropped. There's no Wikis, no hint guides, nothing. But I have my heart set on a Sera romance--and also, completely coincidentally, want my canon playthrough to be a Qunari. Huzzah, right? Well....
So, my Adaar recruits Sera, flirting commences at their first cutscene in Haven and I squee a little. Then the banter-bug ensues, and I learn absolutely nothing else about Sera. (Or, y'know, any of my companions. So that's fun.) So I ally with the mages because my Adaar's all 'freedom for everyone!', all proud of myself...only to get "Sera Disapproves." Well, ****, as my Adaar would say.
I guess I assumed that Sera, like my DA2 lady-love Isabela, thought everybody should be free. How young I was. So I play the rest of the game in a panic, doing anything to get Sera to like me. "Agh, so you hate it if I let Alexius research magic...fine, I guess I'll imprison him." "What, baby, you wanna kill this noble? Enjoy!" "Poor Crestwood Mayor, he had such a tough decision, and I definitely don't want to be a bloodthirsty Qunari...and you hate it if I spare him, Sera? To the execution block!" (Fortunately, I figure out that she approves if I flirt with Scout Harding, which helps!)
Long story short, the moment I get the Sera romance cut-scene is all the sweeter for my worry that I'd never get it! And she and my Adaar live happily ever after. It's all good, innit?