As an additional note, the Irish politics aspect of all of this should be remembered.
Fine Gael was the party that arose in the 1930s from pro-Anglo-Irish Treaty forces and supporters, among them the Army Comrades Association (former Treatyite servicemen in the Free State/Pro Treaty Army) turned fascists, aka the Blueshirts, and the old political party Cumann na nGaedheal. It also gathered under its wing parties representing large farmers. Its Achilles heel for the period of the Troubles was this legacy - authoritarian, pro-Treaty, fuck the poor, tip the cap to the RC church.
Then during the 80s under Garret Fitzgerald and afterwards, especially during the post Troubles period of peace, a massive shift in preoccupation from 'the national question' (i.e. partition) to questions of personal/sexual agency and freedom dominated Irish politics, to be joined in due course by the fallout of austerity policies.
Fine Gael supported the introduction of divorce, same sex marriage and the repeal of the 8th Amendment, and Enda Kenny in particular made some very hard hitting speeches on the topic of clerical abuse of women and children in past decades in Ireland. After the financial crash Fine Gael was able to position itself as the party of fiscal reform, the anti-corruption, fiscal responsibility, socially progressive party.
Unfortunately, austerity in the post crash and Bailout period has hit quite hard in Ireland, and along with strains in healthcare, housing and welfare, and the rise of organised crime/drugs has come the rise of Sinn Fein, branching into Ireland from the 80s on (from the time of the Armalite and the ballot box) and offering a left of centre, progressive alternative that at the moment (in the context of Brexit, and with the DUP being true to form and clearly threatening the prospect of reunification by trashing the GFA) also has the cachet of its NI roots and claim to represent NI nationalist opinion. Sinn Fein has the capacity to wipe out the Irish Labour Party (more smoked salmon pink than red) on the left and also to outflank Fianna Fail on the nationalist and austerity questions. (FF being the offspring of deValera's minority Anti-Treaty forces that became a political behemoth).
Both FF and Sinn Fein have the potential to trample Fine Gael underfoot on the matter of NI if the rug gets pulled out from under Ireland's feet wrt the border and the GFA. (SF moreso than FF, because of FF being tarnished by the financial crash and because Bertie Ahern and Brian Cowen destroyed the local constituency party club organisation that was FF's strength because through those clubs ['Cumainn'] it stayed sensitive to grassroots opinion and the local clubs got the vote out.)
Bottom line - Fine Gael will be working really, really hard in Brussels to prevent a EU about-turn on the question of the Border.