How do you know if a guy is inters in you.?

So I’ve been talking to this guy I met at the mall I only met him once and we didn’t manage to see each other since he works long hours but we’re planning to meet soon anyway

When we first started talking he was soooooo excited like he used to even say I can’t believe I met a person like you

But after couple of days I feel he lost interested and then if I don’t text he wouldn’t and the. I would stop talking to him for a while and then he Talks to me after that

Yesterday we were talking and he was playing ps4 and I was the one who was trying to open up and conversation

And then he said do you miss being in a relationship I said not really cause the last one I’ve been with was bad

He said have you really loved I said no but I’ve been in many relationships but I don’t think I was in love he said then maybe it’s your choices

When we first started talking he actually said that am looking for something serious and I said am the same but I wanna take it easy and slow

And I really don’t feel this is going somewhere I don’t feel that there is a spark between us but then I say maybe cause we didn’t see each other for the second time

What do you all think