When I peek into your nature
And I promise you my goals will exceed any physical pleasure
“Peek” is a double entendre as its playing off the previous line “I can make you reach things unobtainable.” Wale is saying he can elevate her to the peak of her nature (i.e highest point her life) thus allowing to attain certain things she once deemed unreachable.
Furthermore peek is also referring to sex — “peek into her nature.” Wale is saying that when he gets inside her he is going to make her feel an emotional or spiritual connection.
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