Everything is so f*cked up

There is a guy I want to work things out with after stuff went down between us. But it keeps getting f*cked up between us. The one moment he's into me, telling me he loves me etc. The other moment he's ignoring me for days, not responding, being harsh with his and my feelings.. Argh it just frustrates like hell! The only thing I want is to respect each other and handle things as adults -- which we haven't been able to do so far.