Guys, Is my (24F) married boss (46M) flirting with me?

A list of his questionable behaviours/my reasons for being suspicious:

1. Occasionally waiting to greet me at work
2. Standing close to me when we talk
3. Staring at me
4. Talking to me more than other coworkers
5. Smiling and laughing every time we talk
6. Appearing jittery when I go to talk to him/catch him off guard

Is it in my head or should I be wary?
Guys, Is my (24F) married boss (46M) flirting with me?
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