Confused about his texting ?

Hi hope I’m putting this in the right place!
So I met this guy on Tinder last year, our first date was amazing and we ended up spending all night together (ehem) and the next day. He text me afterwards saying he really liked me and all these lovely things, then eventually he started texting less and less. So I didn’t chase him, figured he wasn’t interested and moved on.

Fast forward a few months and he started texting me again saying he was sorry and that it was his fault, his excuse was that he didn’t have money to take me on dates at the time (probably lying?) and that he wants to try again because he really likes me. I decided to go along with it and we made plans to see each other soon. We also began sexting, but besides that he said he really likes me as a person etc. He even brought me a present which he send me a picture of and said he would give it me when we saw each other. Now, he’s become distant again. He still texts me, but rarely and when he does he takes hours to respond to my messages. What is going on with him, should I ask him? Or just delete his number?