Is this a red flag?

I've been in flirty contact with a guy for a couple of weeks. We met and went for a walk yesterday. We sat on a bench and he kissed me after a while. I'm kinda shy so not too much kiss. He then kissed my neck once and very clearly smelled my neck and hair. It almost seemed like he was gibbering to touch me more than he could. I'm not quite sure wheter its alarming or sweet?

Is this a red flag?
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