Unexpected Late Night Invite

I was at a friend's house for dinner when my fiancée called. She mentioned she had plans but might swing by later if she felt like it, which left me wondering why I suddenly felt nervous about being alone. As night fell and she showed up unexpectedly, the tension in the air was palpable. We ended up spending hours talking, laughing, and cuddling on the couch until we both drifted off to sleep together. It's strange how comfortable I felt despite never having done anything like this before, it almost feels like we've been doing this for years instead of just months since we started dating.