G2CU meaning is Good to See You. It is an informal short form of the word that is generally used in text messages, in conversations and social media to show that you are happy to be around a person again. People usually apply G2CU when they have not communicated with an individual in a long period or when they are happy to see an individual on the internet. The brevity of the shorthand is also useful in keeping the conversation straight, loose and friendly without becoming too formal.