10 points! Why is my crush ignoring me?

[Gatz]

On Friday my crush and I had a date night. He bought me dinner and we went to an art show. I was a little disappointed with how things went, but overall still had a good time. He spent the night with me that night then left later the next morning.
On Tuesday I texted him and asked him if he would be interested in hanging out sometime again this week, but I haven't gotten anything back. There has never been a time that he hasn't replied, so after a day I decided to message him on Twitter, but that was last night and I've still gotten nothing.
Why could he be ignoring me?
The odd thing, though, is that last week he told me he likes me, and I told him I like him too. That was our first "date," but we've gone out and made dinner together before.