I feel like I'm going crazy.

So I've been in a relationship before but it was abusive so I'm sort of in new territory with my current boyfriend. My boyfriend is a really great guy but recently I've been feeling like we're not on the same page. It's not a glaring issue and usually I don't notice it. But sometimes I just get so panicky about losing him and then I feel like I'm more emotionally attached to him than he is to me. I might be moving across the country and I think that's why we both feel a little detached from eachother sometimes. I feel like he's holding back on things like saying I love you because he doesn't want to make leaving any harder on me than it already is. Which I don't know if that's what I'm telling myself or if he's not emotionally invested and I'm being delusional. But he's just so good to me and others that I can't imagine him doing that to me or anyone for that matter. Sorry this being so long and hopefully it makes sense (somewhat)! Any advice would be so appreciated!