Guys, What does it mean when complimented my outfit and said I look like a princess is he flirting?

My coworker is in a long term relationship but keeps paying me compliments. The other day he said he really likes my skirt and i look like a princess. Other times he compliments my leggings etc is he just trying to be nice or flirting with me?

I also notice he keeps staring me in the eyes for too long even when we're not talking and touches me when i'm walking close to him.

Guys, What does it mean when complimented my outfit and said I look like a princess is he flirting?
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