Second Date Advice

I went on a date with this really great guy on Tuesday and then I texted him to let him know how much I enjoyed talking with him. He responded saying that he enjoyed it too and would let me know when he was free. I then responded saying I was looking forward to it, and he said me too. It's Friday, and I haven't heard back from him. Should I wait a few days and then text him seeing if he's free, or wait until he texts me?