Beat cream cheese in a large bowl until smooth and fluffy.
Blend in cottage cheese and sprinkle in the dry strawberry gelatin. Mix until evenly pink.
Fold in the thawed whipped topping gently to keep it airy.
Stir in the drained pineapple, chopped strawberries, and mini marshmallows.
Add vanilla and lemon juice. Fold just until combined.
Chill for at least 1 hour to set. Spoon into bowls and serve cold.