thoughts?

It's been almost three months since my break up. I hopped on a dating app on the end of march and since then I've been talking with a guy but honestly I feel like he's leading me on? in the beginning he would reply to my messages fast? would have good conversations but by may he's just been a dry texter... not really caring on what I say and each conversation is just about him... his work.... and friends.... slowly I just been returning the same energy and honestly I think he just doesn't care anymore. do I just not reply to him anymore? or what to do? I'm just really tired of this