In a saucepan over medium-low heat combine cream cheese and marshmallow cream. Cook; whisking constantly until melted. Watch carefully to avoid scorching.
Slowly add milk, 1 tbsp. at a time, stirring well to combine. Stir in lemon juice, mix well.
Remove from heat and transfer immediately to dessert fondue pot over candle flame.
[My 2 Cents]
New to fondue? Here are some suggested "dippers" to serve with fondue: maraschino cherries, strawberries, kiwi slices, mango pieces, graham wafers, chocolate wafers, chocolate cupcake cubes.
Adapted from The Everything Fondue Cookbook