Alternate Character Interpretation: While definitely sympathetic it's possible to read Tiffany as rather manipulative. It's revealed that she used information from Pat's mother to arrange "coincidental" meetups with him on his runs, she persuades Pat to spend time with her by promising to assist him reconcile with his wife, forges a letter from her and lies to him about Nicky will be present at the dance. She also displays conveniently encyclopedic knowledge of Eagles when interacting with Pat's father despite claiming not to like football earlier in the film.
Fridge Brilliance: Pat's Trigger for his stalking of the ex is "My Cherie Amour", a song about a guy who loves a woman from afar. Given that he's got a restraining order against him forbidding him from even being near the school she worked at as a teacher and she won't give him the time of day, she's as unreachable and distant to him as the woman in the song was to the singer.
Tear Jerker: Pat Sr's heart-to-heart with Pat Jr. Also doubles as a Moment of Heartwarming.
"Maybe I didn't spend enough time with you growing up. I spent too much time with your brother (tears well up in his eyes). It might've made you feel worse about your behavior, but I... I didn't know anything, I didn't know how to handle it. I mean, that's what all this Eagles stuff is about. It's about us, spending time now I... (voice breaks) I wanna do everything I can to help you get back on your feet. That... that's the whole point. Yeah. I wish you'd watch these games with me, so we could talk, we could get into things."