Spoiled newborn

I'm starting to think newborn manipulates me... He cries when nothing is wrong just because he knows I'll come running. Shoul I stop running up to him so fast, let him self sooth for a moment? He's only 3 weeks but I feel a spoiled streak building. Won't fall asleep unless he's laying on me or daddy then cries as soon as he awakes out of sleep and he's in his crib. Right now the only way to get him, To stay sleep is if he's in bed with us... But I wanna somehow try not to Cosleep if that's what it will take to keep from spoiling him... Suggestions?? What about any personal experiences? 

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