Almost tell him. Muster up the courage to tell him in some sort of grand gesture. Perhaps you could run through the airport before they board their flight to Europe and shout, “Wait! Don’t go! I love you!” Maybe you could say something like, “Pick me, choose me, love me.” Remember that airports frown on people attempting to bypass security in order to reenact scenes from the kinds of movies that Katherine Heigl chooses to star in. Also remember that your best friend is not even planning on going to Europe anytime soon. Lose the courage to tell them almost as quickly as you found it.
Wonder what you’re getting out of this friendship. Wonder what the foundation for this friendship actually is. Wonder how long this can last. Wonder if they’ll ever change their mind. Wonder if they know you’re secretly in love with him. Wonder if his girlfriend loves him as much as you would, as you do. Above everything, wonder if you should walk away. On numerous occasions, decide you should walk away. Never actually walk away.