What’s the different signs between a guy being flirty and wanting something more vs just being friendly?

Ok so if a guy shows the following signs is he flirty or just friendly.

1. Leans in close, like really close.

2. lots of eye contact, locking regularly from a distance but doesn’t turn away. Sometimes it’s like a serious eye contact, like we’re thinking things, but don’t say. But it keeps happening and it’s not uncomfortable.

3. regularly checking me out.

4. Playful teasing, eg the other day he pretended to look surprised to see me when he came around the corner and then slow motioned to run away, then laughed, smiled and waved.

5. Sometimes acts stunned to see me, stumbles on words slightly and then carries on.

6. He helps me a lot, the other day another girl came up to us and she said he had to go see friend, but he seemed relunctant to go straight away, like he liked our conversation and wanted to delay having to leave.

Is this in my imagination or is he just friendly?

What’s the different signs between a guy being flirty and wanting something more vs just being friendly?
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