Yandere Donatello

You absolutely trusted Donatello and told him about how things were going on on your personal front. All the guys who have ever shown interest in you and got to know you, disappeared without a trace. It was weird.
Donatello supported you and said that you will still find your soulmate. But you didn't know about his terrible secret, which he kept to himself.
"Who asked you out this time?"
Donatello was sketching a future invention in his laboratory in a notebook, waiting your answer.