Helppp

So I was speaking to this boy around 2/3 years ago then he went to jail so we lost contact. 2 months ago he found me on socials and started messaging me saying how he misses me and when he comes out he wants to be serious we both like each other. But recently I feel like I’m the only one putting effort in like I always message him he never messages me. I want to confront him about it but don’t know how to and what to say. Any help please lol.