You and Kuroo already dating for 8 month. At the first he was so nice, give you princess treatment and makes everything work out together.
Since you wasn't the type of girl gonna asking about his ex, or how's his last relationship ends you let him open up by himself if he wants to and more focus on your current relationship with him. But slowly you realize he still haunts by his past relationship, how he sometimes mention his ex out of nowhere but you also can't tell if he still in contact with his ex cuz it crossing the line to check his phone.
You trying so hard to push all the overthinking and bad thought to Kuroo but you know he never love you fully, despite of his traumas from last relationship you know you still not winning his heart. Every first experience between you and Kuroo he already has his with her.