Future Donnie was given his brothers and younger brothers cotton candy he saw his younger self and holding hands with his younger wife

As future Donnie approached Nikki and hugs her as present Donnie and Nikki looks confused

Future Donnie: no matter what timeline you’re in you will always still be my wife

Donnie: wait we get married in the future?’

Future Donnie noded

Nikki: so where’s future me?

Future Donnie: I’m working on it