Islam does not allow free mingling of the opposite sex and also does not permit going around with a non-mehram or a fiancé.
Prophet Mohammad (SAWS) says that, ‘Do not leave girls and boys alone because satan is always on the prowl”.
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These days it is quite common to go out on a date. Girls and boys freak out and spend time together. In some cases the boys try to woo the girls or else they may try to paint the town red with an arm candy besides them. Whatever the intention but Islam does not permit this type of freedom. It is satan who entices the youngsters to do all this but they do not understand. They feel that all this is the in-thing and they should also be doing it to be considered hip in their social circle. Watch this video also.
As far as choosing their future spouse is concerned Islam allows it. The girl and the boy can meet but the girl should have a veil.
If the girl has to meet the boy then she can do so and talk to him also. However the boy’s family should also be present. Islam also allows meeting more than once but within the purview of Islam. Meeting the future spouse is allowed in Islam so that the girl and the boy can make up their mind whether they approve of each other.