What does it means when a guy says "you're my sunshine"?

Anonymous

I met this guys six months ago at work. He's single. He always seems so cold and distant with everyone. The past month, he had opened up to me, helped me with work, made me laugh, and he also has been attentive when I requested him to do something. He bought me energy drink a couple of times. Just recently I told him I will be on vacation for 4 days, he was surprised and said "well what do I do?​ No (my name) and later on that day he told me" I'm sad.." He made a pouty face it was sooo cute. So that same day I bought him energy drink just to show appreciation and to cheer him up. I drew a pouty face on a bottle, he told me "I'm gonna keep a bottle". My first day back to work from vacation, I asked him if he missed me he said he did. Then tried to be around and said "preek-a-boo" It was soo cute. I'm not sure if he likes me and I wanted to hear it from him. Before he leave work, (he'll stop by my desk and talk to me every day) I light heartedly asked him "so...​You missed me. What​ does that means? He froze and said"...​uh well thats on the spot", he stood there, looked at me not know what to say. Then he smiled and said "You're my sunshine that breaks the clouds away" I laghed and said "what is that means? He said" You already know" Does he likes me? I want to know because I don't want to waste my time.

Updates
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He stayed late at work last night to help me in my area, when I left he was still working he made a pouty face. He managed to follow me outside and gave me his numbers. Because he stayed late to help me in my area, after I get home and done eating doing my things, I casually texted him "drive safe" he later responded back "i made it home safe thank you :)" Almost an hour later I texted back ":) good" But there was no commu
Updates
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But there was no communications the whole night he didn't text to talk about anything else. I was like wtf this is too weird. He's an introverted I get it but if he gave me his numbers I thought he wanted to get to know me? He would get jealous when other guys comes around me. But one text from him the whole night? It's like "wtf dude you're so weird". Should I still give him a chance?
What does it means when a guy says "you're my sunshine"?
11 Opinion