Each of them deals with this confusion in his own way.
5 seconds sound clip from the Teenage Mutant Ninja Turtles (1990) movie soundboard.
You can hear this line at 00:52:44 in the Blu-ray version of the movie.
Quote context
[...]
- It's strange being back on the old farm.
- Even after all these years, it still feels like home.
- My amazing new friends have suffered their first real defeat.
- That's bad enough but they've also lost the opportunity to find out about their mentor...
- And I'm sure that hurts them much more than anything else.
- Each of them deals with this confusion in his own way.
- Donatello has found someone to latch onto.
- The Professor and Mary Ann, happily ever after.
[...]