What does it mean when a shy guy sends you a red heart emoji?

We have known each other for a long time and it feels like there is something between us but we're both shy. Yesterday we texted for a while and when we ended he sent me "goodnight ❤"

He rarely uses any emojis to anyone. He also recently took a screenshot of my selfie. Is it possible that he might like me? Or am I reading to much into it?
What does it mean when a shy guy sends you a red heart emoji?
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