Were these tears of joy or sorrow?

Hi all, I hope everybody is having a fantastic summer. I came across this video just a little while ago, and it occured to me to ask for your feedback. In particular, if there is a shrink in the house that would be fantastic. Here is my question: is this little boy crying tears of joy or tears of sorrow? He sure doesn’t look happy to me. Everybody and their dog is saying how great this is, but he just doesn’t look happy to me at all. He’s almost sobbing, isn’t he? What do you think? WATCH: "Don't cry!" Adorable moment as Marine's 4-year-old son tearfully hugs his new stepmom during wedding vows: https://t.co/jGJ0mffCP5 pic.twitter.com/h5qPSMfncs — Good Morning America (@GMA) July 23, 2017