Hi Christina,
Don’t panic. Your ex will come back.
However, you should ensure that you don’t continue initiating texts to him at this time.
He may still be upset over the Twitter misunderstanding.
Just give him space.
Guys often don’t like talking or dealing with emotional issues in a relationship.
Instead of talking it through, many opt to just disappear and take some time out from the relationship.
That is most likely what he is doing now.
He will text you again as long as you stop initiating texts to him at this time.