Toddler, boyfriend and ex-boyfriend (Niall Horan fanfic)

Hey, I'm Marissa Johnson and i am 20 years olds. I have a two year old daughter called Piper (pronounced pie-per) but not Piper Johnson, Piper.. Horan. Now your probably thinking that me, Niall and Piper are one big happy family. Wrong. When Piper was first born everything was perfect. Niall was a great dad, I'm not sure about now though. I haven't seen him or spoken to him for 2 years so that must mean Piper hasn't seen him for 2 years. Correct. I'm going to take her to see him soon even if he doesn't want to see her. I'm sure deep down somewhere Niall loves Piper and he regrets everything he did to hurt me, that's why I'm going to take her to see him. Gradually I have learnt to move on and now I have a boyfriend. Something that involves my boyfriend breaks Niall's heart which leads me to feeling guilty. But what was it?