I have a lot of feelings on this sort of thing.
I think it’s totally fine to love (the idea of) fictional characters and to admire them for traits that either we ourselves want to emulate or would find attractive in others. Hell, I'll dreamily sigh when thinking of some of my favourite characters, and I'm sure I've subconsciously compared actual people to them (and found them lacking, lol). However, in admiring these characters, I think it becomes very easy to get caught up in an idealised sort of romance.
“If I could just find someone just like Character X, then I would be happy...”
Such a romance does not exist except in books and films. In reality, whilst someone can fill in a lot of the empty spaces in your life, they can not and should not be expected to fill everything. Can you imagine someone putting that sort of pressure to be their everything on you? So why would you push that on someone else?
In reality, even the person you love most will occasionally disappoint you, or annoy you, or frustrate you. Love, methinks, is not so much about finding someone who will give you absolute happiness, but rather, finding someone who proves worthy of your devotion in spite of all their flaws. And who is absolutely devoted to you in spite of all of yours.
I bring this up because I think that folks (especially out West) have a tendency to romanticise what real love is. We’ve all grown up hearing stories about “one true love”s and “happily ever after”s and sacrificing everything for the sake of a pure and lasting love. Because of this, one may be tempted to create a very narrow definition of the sort of person they want or even project attributes to someone they already admire because they are sure this “soulmate” is the only one for them.
It’s absolutely fine to have preferences, but if you open yourself up to other possibilities, what you find may surprise you. So this person you’ve met doesn’t have, say, a face like Yuna’s or a humour like Cid's or a presence like Sephiroth's or whoever your idol may be, but they offer you something else that you never realised you wanted until they gave it to you. ‘Cause that’s the funny thing about relationships; each one can teach you something you hadn't realised you needed to learn about yourself, about others, and life in general.
TL;DR: Careful not to be too picky as no "perfect person" exists.
Having said this, congratulations on finding your own “Rinoa." Wishing you all the best! Hope you prove good for each other.