I have been depressed; yet, I am jovial in a crowd of 2+.

There's great info in the post above.
You know your friend best.
Let your love for your friend and let the flow of the conversation be your guide.

Distractions are great!
I can forget my mood when playing cribbage, for instance.
Do you have any table games you could play?
Going to movies might be helpful.
Bowling or a similar activity?

I hope you and your friend have a good time together!

WC