I am a teenage girl and I would like to know if chatting with boys on social media is a sin?

 

The matter is not restricted to this extent. The male-female relationship is based on chastity. Communication between sexes is permissible if both parties observe the manners prescribed by Islamic law and the purpose of the conversation is deemed valid by Islamic law such as work, study and so forth. A relationship that exceeds these limits becomes prohibited.
In Islamic law, a woman is commanded to avoid anything that might make her an object of desire for men or an object for forbidden feelings.

And God Almighty knows best.