Idk anymore

At first I've been putting everything into my relationship. Everything was great. And then he moved to a different state for work. And it went downhill. I guess we are still together. But our communication is lacking and since he hasn't been putting in the effort neither have I. Idk when we will see each other next we haven't talked about it. But I made plans for the next 3 weeks and I'm not changing them. I know I need to just cut it off because I don't think I'm happy. I guess I'm just scared of being alone. I mean, im 25, it's not like I'm young anymore. Just feel like a failure. Long distance relationships suck