If a guy calls a girl just to see how she is, talk to hee about his feelings and open up, is it a sign he's interested?

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Some people would make the argument that he's"just being friendly" he probably is like that in general and stuff and he is overall friendly to a lot of people we work with but he gives me more attention than anyone there and I've never had a guy do such things that only saw me as a friend. I feel like it has to mean something.
If a guy calls a girl just to see how she is, talk to hee about his feelings and open up, is it a sign he's interested?
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