I remember Valentine's Day when I was in primary school. Kids brought cards to school and passed them around to potential sweethearts.

Although it was seen as an innocent practice, we should have been more sensitive to the kids who didn't get any cards and were made to feel rejected by their classmates.

Things are different these days, which may leave parents struggling with how to talk about love and relationships – and rejection – with their kids. Developing attachments and experiencing rejection are a natural part of childhood.

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A few transient experiences with rejection can support a child's development of coping skills, as long as such events occur in a protective environment and are followed by opportunities to develop new attachments.

With puberty, concerns about relationships become more acute as parents often wonder when their child is ready to start dating.

The world is more complicated now – I've learned that kids don't really go out on dates any more. What they do is hang out in groups, and sometimes more intense affiliations develop between two members of the group.

At that point the pair (same or different sexes) can decide if they want to be considered a couple. At this point the issue of consent comes up. Kids have to negotiate different kinds of consent for different types of relationships and for different stages in a relationship. It's a marvel they seem to manage as well as they do.

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It's not a process that parents have much control over. Attempts to influence behaviour will quickly be seen as coercive and will lead to friction and a breakdown in communication.

It's better to put limits on curfews, spending money, drug and alcohol use and use of the car, to give a few examples. Parents can also talk to their children about what a positive and healthy relationship looks like, be good role models in their own intimate relationships and provide guidance on coping with rejection.

Here are some tips on how to approach relationships and the types of things to cover when talking about young love:

Health Advisor contributors share their knowledge in fields ranging from fitness to psychology, pediatrics to aging.

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Dr. Peter Szatmari is chief of the Child and Youth Mental Health Collaborative at SickKids, CAMH and the University of Toronto.