It's looking to me at this stage that the section of Britain that want to leave would be more than happy for the Republic of Ireland to take Norn Iron off its hands at this stage, and in particular the big orange pain in the arse that is the DUP, and then be able to leave the EU without all this hassle. I don't think there'll be another referendum. I think everyone knows it could easily go towards Leave again and would be a wasted effort. And I think Micheal Martin is canny enough to know that if he waits in the wings for just the right time he can be the taoiseach to "deliver" a united Ireland. However, what happens between now and then is anyone's guess. Possibly customs checks on the Irish sea is the only solution, I dunno.
Micky Mac may be waiting a while for that