After a few days he came back and eventually when I was sure of his intentions we started dating again after about one month.
He stated to you that there wasn't chemistry.
Therefore, your measurement of his intentions doesn't coincide with reality.
What likely happened here is that he was using you the entire time, for whatever it is he wanted .... all of this flies over your head, which renders you totally gullible ... in which he realized and capitalized on it.