Can't tell if this guy likes me or not should I ask him or wait to see if he says anything?

Anonymous

I work in a shop and I really like this customer that comes in now and again. I'm not sure if he knows or not I get really shy when I serve him, he's complimented me once and and makes conversation with me when I serve him but I dont know if he's just being friendly. He came in when my co worker was serving and I was just walking around doing stock check and we made eye contact and i got really shy and looked away then he whispered something to my co worker but i couldnt hear him properly and my co worker didn't tell me what he said so I'm thinking it's something bad now maybe he knows I like him I want to ask him if he's interested but I dont want to make it awkward with me being at work

Can't tell if this guy likes me or not should I ask him or wait to see if he says anything?
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