What does it mean if my boss starts treating me nicely and starts calling me baby girl?

I'm 19 he's 37 and married he recently started telling me he wants to go out also that he wants to have sex with me . . He's always telling me I'm pretty and he recently started calling me baby girl .. I'm confused .. should I go out with him or not?
What does it mean if my boss starts treating me nicely and starts calling me baby girl?
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