Complex sentence: During an interview on national radio on 18 January 2015 (his 36th birthday), Varadkar spoke publicly for the first time about being gay: it's not something that defines me.
Split into simpler sentences: During an interview on national radio on 18 January 2015 (his 36th birthday), Varadkar spoke publicly for the first time about being gay. He said: it's not something that defines me.