How about Oobleck surprising Goodwitch a massage that leads to more?

It was obvious to everyone at beacon that Glynda was put through more stress than anyone else in the entire school however no one was willing to confront her about it except Doctor Oobleck. He came to her a few days each week asking how he could help her and seeing if he could take some weight off of her shoulders. After a few weeks he decided to sit down with Glynda in her office to talk about it.

"Glynda" he sighs, fixing his glasses. "We both know that you've been put under extreme amounts of pressure and it's been affecting you. There must be something I can do to help you with this."

She shakes her head and sighs as well "it's very kind of you to offer Barry but there's nothing you can do. My responsibilities are mine and mine alone"

He takes a sip of his coffee and thinks to himself for a few minutes before speaking again "well if you won't let me take some of your work… is there a way I can help you relax? Perhaps a massage or a movie. Something like that"

Although she didn't want to admit it she would kill for a massage and decided to agree to it. He immediately shot up and got behind her, working his hands into her shoulders. After a couple minutes they decided it would be better if she was laying down so they decided to head to her room. When they got there Glynda worked on getting her blouse and skirt of so that it would be easier for Bartholomew to massage her.

As time went on things became more heated between the two with a few kisses and I love yous whispered here and there. This led to even more. They began slowly stripping each other and caressing each other's body gently. Before they knew it Oobleck was on top of her, slowly and gently thrusting his large cock deep inside of Glynda, making sure to go all the way every time. He continued kissing her passionately as they held each other close and made love.

"B-Barry… ah!~ I... I love you… thank you for all of this… thank you for loving me" Glynda whispered and moaned between kisses

Oobleck just softly smiles and whispers back "there's no need to thank me. I would do anything to help you my love"