Basically, they'd pay for my plane ticket and we'd share a flat! Which I must admit is a great offer, especially as my brother lives 4 hours away so we could visit him on the weekend. Exciting awesomesauce!

Except I do know what this offer really is, they're trying to get over him there and get him involved in office work, then pressure him into extending his stay. A month is nowhere enough time to interview people, make a selection, train them and get the office running. Who are they kidding!
We had a nice long chat on the phone last night, it was quite reassuring. He told me he's aware of the trap and annoyed at how pushy they are, but he won't under any circumstances allow to be persuaded into staying any longer. He only looks forward to this chance for us to be together.
I told him I trust his judgment even when it makes me feel uncomfortable, and if he says it'll be OK, I accept it. What else is there to do anyway? It is after all a fantastic chance for us to be together someplace new, and see my brother too. The trip would be done sometime in September or October which does actually work for me. I just have an uneasy feeling about it, which stops me to be over the moon about this as I probably should be.
I'm still waiting for a TV drama moment, for them to try to pay me off or blackmail me into dumping him, something theatrical. Maybe try to kidnap me and write a fake goodbye letter. "I must go… please don't try to find me. Just go America, it's where you belong. Peace out."
Can't say I'd be much surprised at this point.