Was she giving an invite?

I met this girl at the gym who had tried hitting on me before and I wasted time and after I tried asking her out she said she was already with someone else. But we started chatting with each other whenever I ran into her at the gym. Once I met her after like a year and at the end of the conversation I just asked how is everything else? she smiled and said nothing much and all and that a nice weather is coming along as summer is coming close here and then said bye and enjoy my session as she went back to resuming hers. When I told this to my friend he said that she was either signalling or hinting or inviting you somehow? Was she really?

Was she giving an invite?
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