No, it's not promising.
That reminds me of some of my crushes.... who wouldn't say hello to me only if I happen to be in their way, as if their vision span is kinda of straight laser projector, sometimes they passed by just next to my shoulder and still didn't notice me lol.
You know, the vision span of humans is around 120 degrees, which means, that you would notice a familiar face from your corner of your eye right away even if he happens to be somehow to the side of you, and you would definitely notice a face you like right away.
I have realized that all the girls that I have tried to accidentally bump into them in order to even notice my existence, were really barely noticing my existence and hadn't the slightest interest in me.
There were few girls that would salute me from afar and come to me every time to say hello, but those always turn out to be those kind of super-social people who who enthusiastically say hello and talk to every acquaintance they detect- so there was no way to tell if I was something special (but with time you can tell, those really never initiated texting or contact on fb...so yeah, I was simply some acquaintance for them).
The only obvious case, was the shy girl (who still a friend of mine) who used to come to me to talk to me out of all people - this was extremely obvious and It turned out that I was right, alas we turned that we would not be compatible as a couple.