It all depends on individuals.Dating and having an emotional attachment with a girl has to deal with sacrifice which must be symbiotic,if one is dating a girl,he must bare in mind that there is tolerance in relationship,patience and love,if all of them are not in a relationship,then something is lacking.one must take a careful look at the person he wants to marry,or the person he is dating,and know if she has thesame level of love as you have for her,if she doesn't,then there is need for you to change your steps towards her,or make her have love for you.