Clear up my back frok acne?

Okay me and my boy friend are going to a water park in 2 weeks and this will be the first time he will see my body as in most of my skin. But my back/shoulders are breaking out and I gained a bit of weight dose anyone know a quick way to clear up my back and lose a bit of weight! I want him to get big eyed when he sees my body for the first time in 4 Yeats of us dating!
Clear up my back frok acne?
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