I swear to god if she smiles at you and I mean directly at you while looking you in the eyes, she is surely atleast a bit interested. I just realised that and all it would've taken was a "hi" and smile back. I just smiled back tho and thought of a clever pick up line -.- all it took would've been a "hi and where are you traveling to?" (I'm at an airport)

I will now make this a rule for me: if she smiles at me I have to immediately say hi and smile.

I can come up in the process of saying hi and introducing myself with what I can follow up. But if I don't say immediately hi I won't at all and the whole convo is just in my head.

I will also do this if I don't think she's pretty in my eyes. It's practice and I don't have to ask for her number.

EDIT: just got off my plane and I'm blown away by the upvotes and comments :D gonna reply to y'all now