Read the following context and choose the best option to answer the question.
Context: But guys .. the thing is , I ' m falling SO hard for Brian . SO hard , it 's insane . He 's like the sweetest thing ever and writes me songs and burns me cds and treats me amazing - ly ... and Jenn does n't know this , she probably just htinks we 're some random couple - ing . I do n't really know what I ' m asking here , i guess maybe advice or if anyone else went through this .
Question: What is the reason that Jenn does n't understand the nature of her friend 's relationship ?
Options: 
- Jenn is spiteful and jealous and refuses to validate her friend 's happiness in any dimension
 - The speaker has not , as of yet , let Jenn know the details of how things are going with Brian
 - Jenn has her head in the clouds and only seems to be able to attend to her own interests
 - Jenn is insecure about her own ability to find a partner , so she diminishes her friend 's success


The speaker has not , as of yet , let Jenn know the details of how things are going with Brian