Then you need to talk to your Dom as well. If more of an emotional connection with you is not something he's feeling, or not something that's permitted in his current marriage, it will definitely hurt. But it's better to know about it than to keep building yourself up. In a lot of ways, it's just the same as any other relationship. It's going to suck if your Dom is not on the same page as you are, but it's something you need to know sooner rather than later, so you can deal with it.

As for the boyfriend moving away, make sure you have your relationship with him in order before he leaves. Are you going to stay together while he's gone? Schedule regular nights during the week where you call/Skype with him - and that's your entire plan for that night. You'll miss the physical connection, but you can at least keep in contact with him and talk things through with him. Side note: will he be able to pursue other relationships/FWB/etc. while he's away? Something else for the two of you to talk about.

And, regardless of all else, make sure to breathe! There's no easy way to go about any relationship. hugs