Idiom describing a man's playboy

go back on one's word

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Serve Qin in the morning and Chu in the evening-change sides quickly.

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make/choose friends indiscriminately

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Casual and elegant manners

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Attract bees and butterflies-(of women)

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Be able to succeed in some way

What idioms are there to describe men's playboy? Romantic, romantic by nature, philandering, lingering among flowers, attracting bees and butterflies.