what Gayle said.

Also, don't feel responsible for this. it's circumstances outside of you that are making this happen, not you. You're not throwing him out. It's the situation.

The unknown is always hard to deal with but look at it this way. It sounds like things are probably pretty good between you. I'm sure that's a great start. If you have to deal with being apart, not living together for 4 weeks, when you get through it, I would bet the bank on this, that your relationship will actually be stronger.