As with many verb-based idioms, this is both an idiom and a phrasal verb. To go out (with someone) can have two meanings. it can means that two people will go on a single date or that two people are involved in a romantic relationship. Most idioms are phrasal verbs, but many phrasal verbs are not idioms. A phrasal verb is a phrase containing a verb and a preposition that can't be understood without one another. An example is "broke down." He was late for work because his car broke down. You can't really say his car broke or his car is "down." You have to put the verb and the preposition together for the phrase to have any meaning. Idioms are expressions whose meaning is not easily predictable from the component parts of the phrase. An example of an idiom is "to kick the bucket." It means "to die," but you wouldn't guess that from any of the words in the phrase. It's also a phrasal verb because you can't cut out any of the words in the phrase.

yahoo: ibn_elnakhel skype: laura.maron77

we can be frind in yahoo...skype too but skype no work now

Go out with someone means to go out (on a date) with someon