I like her (romantically): Lei mi piace.
Explaination: In Italian, to say that you like someone (romantically) is expressed with the word piacere. You shouldn't confuse this with expressing that you simply have a good opinion of someone (e' una buona persona). Remember that the word piacere litterally means to please, therefore the person you like (he or she) is the subject of the sentence and you are the direct object (i.e. She pleases me).
"Like me" in English is Come me in Italian.
"I like you!" in English is Mi piaci! in Italian.
"You like it!" in English is Ti piace! in Italian.
"Do you like me?" in English is Io ti piaccio? in Italian.
"I would like" in English is Vorrei in Italian.
"Like" in English is come as a preposition and piacere as a verb in Italian.
"I still like you!" in English is Mi piaci ancora! in Italian.
"You don't like me!" in English is Non ti piaccio! in Italian.
"I like to draw!" in English is Mi piace disegnare! in Italian.
Birichina in Italian means "naughty (like a child)" in English.
"I like pizza!" in English is Mi piace la pizza! in Italian.
"I don't like" in English means Non mi piace in Italian.