 If you liked
Ouran Koukou Host Club
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 ...then you might like
Love Stage!!
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For starters both MC cross dress though while Izumi is a guy Haruhi is a girl.
Rei and Kyouya have the same characters and so do Tamaki and Shougo.
They are both comedies and both have to do with the lives of the rich in a way since in Ouran they deal with kids if millionaires in Love Stage the main character is a son of a show business family.
But yeah they both are romcoms that will put a smile on your face.