How do I know if my boss is interested in me?

I’m a 23 year old female and my boss is 25. I’ve worked there for almost a year. We joke around, he compliments my fashion sense and personality, and shares music he likes with me.

As of lately he seems to be giving me extra special attention. I asked him to put me on the schedule a couple days ago and he gets this happy little smile on his face & when the other manager says “We have to vto 7 people for that shift tomorrow” He just says “No, she is staying.” While still smiling.

I was standing waiting for reassignment and a friend of mine walks up and compliments my shorts. After telling her thank you I quickly glance at my boss & he looks nervous as hell. I could be just reading way too far into this stuff but I’ve been trying to pay attention to mannerisms. Next day he shares music he likes with me.

The day after, he told me he thought something I said was funny then starts telling me a story from that morning & kind of flexing his manager title, “I’m going to tell your manager.. well you’re looking at him”
He was trying to help me fix my work station & ofc when he comes over it automatically starts working & he said it was bc he’s intimidating & scared it. Flexed his management title some more when he said he would do the job I was doing and just be overpaid for it. Little stuff like fixing his hair under his hat when he saw me coming.
That’s a lot but I need advice on whether y’all think he’s trying to impress me & if he is being flirty

How do I know if my boss is interested in me?
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