Long-term relationships suffer from one main issue: Predictability. For some, predictable can mean security and comfort, and those aren’t bad things. But predictable also brings about routine without variance and more importantly without excitement. For those who haven’t done their own work and have transitioned to seeking/finding their value externally, this is a recipe for disaster. It’s simple math: Predictability, comfort and routine make people forget why they fell in love in the first place.