He asked me on a second date, but didn't follow through. Why?

I met this guy online, we went on a date. We had fun and even on the date he mentioned that we should meet again. After this, he texted me every night and we chatted. Last Friday, he texted that we should meet again next week. It was late at night, so I just said that "Monday could work well, we should talk about this later" To which he said "sure". Interestingly, it's Tuesday already and he hasn't contacted me at all for 2 days, which is very weird. He has been consistent by texting me every day and emphasised that he likes me. What went wrong?
Updates:
2Girl Opinion
4Guy Opinion
Most Helpful Girls
Related Questions
What Girls & Guys Said
02Related myTakes
Click "Show More" for your mentions
Most Helpful Opinion(mho) Rate.
Learn more
Learn more
Most Helpful Guys