Personally I don't generally assume things are romantic unless there are explicit signs of romantic/sexual attraction going on, so as far as I'm concerned you're fine if they're just... you know, not going on about how good the other smells or how soft their skin is or how they can't bear to be apart or blushing at everything (believe it or not, I have actually read a fic that was meant to be about a platonic relationship but managed to botch it by including all of those things). As a point of comparison, I read Apollo and Narissa in Crater Dreams as platonic until she suddenly kissed him at the end. I'm pretty used to being wrong, but I don't think you're genuinely leaning too romantic in a way that's problematic for the story unless someone like me is having a hard time not seeing romance.
Of course, there are many other people who pretty much see any man and woman (or any two people in general) who appear to care a lot about each other as a potential couple, and it's hard to dispel that perception completely. Honestly, I wouldn't really worry about it. Shippers gonna ship. If there's a good place for it to come up in the story, you can always have the characters' precise feelings towards each other come up explicitly, but if there isn't, don't try to force it in - it'd probably be awkward. It's not a huge deal if some people interpret it as romantic.