I strongly discourage the idea of friendship between a boy and a girl if they do not have any reasonable and dignified relationship. Try to ignore such offers as long as you can and if you see that there is no more scene of ignoring then do say 'No' in very clear and noble manner. Don't be harsh because sometimes boys make it the matter of their ego and they can even harm you. There can be a friendship between opposite genders if there is dignified relationship exists between them like if they have a marriage bond, or they are siblings etc. I think a wife can have a friendship with his husband but a girl can not have with a boy.
This is separate issue to discuss the friendship between husband and wife because there are certain concepts regarding that like they can not be friends etc. So, do not give even a single thought to the idea of friendship with a man if you do not have any dignified relation with him. The other scene of the situation is that when a boy offers a girl to have friendship then she can not think anything good or bad as she has been overwhelmed by the feelings and might start friendship; a pure and sweet friendship?
This is separate issue to discuss the friendship between husband and wife because there are certain concepts regarding that like they can not be friends etc. So, do not give even a single thought to the idea of friendship with a man if you do not have any dignified relation with him. The other scene of the situation is that when a boy offers a girl to have friendship then she can not think anything good or bad as she has been overwhelmed by the feelings and might start friendship; a pure and sweet friendship?