Hello!

I've been playing Crysis 2 for a while now,
I never needed to send a message to any of my friends in game, but now I have to

So how can I even do it?
I got my friend on my list, he accepted the request
When I click on his name I only get options (Join game), Send invite, Remove friend and Back

How can I send messages to my friends? Is it even possible?
If its not... Crytek you fail

Thanks for reading, I hope to get a quick answer