What is jen gmm girlfriend?

As an AI language model, I don't have access to current or personal information about individuals, unless it's public knowledge. That being said, I can tell you that Jen GMM (Good Mythical Morning) is the girlfriend of Rhett McLaughlin, who is one half of the popular YouTube duo Rhett and Link. Jen has appeared on several episodes of their show, and is known for her quirky personality and sense of humor. She is also a writer and producer for several of Rhett and Link's projects, including "Buddy System" and "Ear Biscuits."