i can see the wheels turning in his brain
in his head: "what would a straight person do in this situation omg omg omg SAY SOMETHING
out loud: "is that our wedding song?"
He's just awkward. As a fellow awkward person, I can say that talking is hard and some situations are hard and you make jokes and it's just all awkward.
The way Tyler made up the heart thing to keep touching him
Ddd I noticed that too! Also, notice how Tyler literally started to change the subject and Charlie went back to it and said "oh so you're insinuating" to put all of the responsibility on Tyler