Situationship advice☹️

Hi all. I’ve been talking to a guy for more than a year now and it’s been good for the most part. Why have I been with him for that long with no title? Because I like his company and attention. Sometimes we will have little arguments and it almost feels like we are a couple. However, recently he’s been acting way too clingy and the nickname calling has been nonstop. I confronted him and asked why he hasn’t committed and he said because we are “long distance” (3hrs) and to wait a few more months but in a few months I’ll be moving out of state so I don’t think it’ll end up happening. I have started to lose feelings for him. What should I do?