Does he like me and is just shy?

So there's this guy I really like and am attracted to who works at a gas station and for the last few months I only go inside the store here and there but every time I do when he sees me his face lights up right away and he’s all big smiles and shiny eyes and he will pretty much smile the whole time while I pay for gas then he always says “ have a good day” still smiling all big and staring into my eyes… but I don't know today when I went in he was smiling big when he saw me ( I made an effort to look better then usual today for him ) and then he stopped smiling while he was counting the money maybe because I had stopped smiling for a bit? I think he could’ve been mirroring me but I’m not sure. Then we both smiled again when he handed me the change and I could just tell he was feeling awkward and I don't know if that’s a good thing or not… plus for ONCE today it was just me and him in the store and he didn’t even ask me out or strike up a convo… I was really disappointed and sad. And after he handed me the change I took longer then usual like a few seconds to put my money and stuff in my purse which I usually never do there and instead of asking me stuff he walked a few inches away cuz I guess he was feeling awkward but he still kept staring at me and facing me until I looked up at him and he looked away and smiled and said “have a nice day” I smiled and said u too and left… why did he look away? He usually smiles and stares until I leave… could he just have been being nice this whole time or is he just shy? Maybe was shyer then usual today cuz I looked better then usual? Should I ask him out first next time? I really do like him a lot and I’m sooo confused I was 100% sure he liked me before now idk… the way he smiles and me and lights up I can see it in his eyes when he stares I’m pretty sure he does like me … please help! Plus my friend said he never smiles at him that way!

Does he like me and is just shy?
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