Hot Chocolate & Liqueur

[Bacardi1]

If I make hot chocolate with milk or half-and-half & want to add a dash of cream liqueur ("Castries" to be exact (heavy cream, natural peanut extract, rum), will the hot chocolate curdle?

[C. Hamster]

Why would it curdle ?

[ipsedixit]

I would do a semi-temper first by warming up the cream liqueur just a bit before adding it to the hot chocolate.