She is Lisa Wesseler (Germany, 1989), she is Benedikt Höwedes's girlfriend.
Lisa is vegetarian. She is student of Universität zu Köln (I think some about music) and was student in Joseph-König Gymnasium and did her abitur.
She has a sister called Paula.
Benne and she met for the first time in high school in 2004, they dated in 2007 and have been together ever since (Lisa is the first love of Höwedes). She wants to go to Barcelona on holidays with him.
After her presentation, I want to talk about her style.
Lisa wears dark colours like black, grey or blue, or some colours like red, yellow or orange. She wears her own style, perfect for her. She looks well even when she wears "normal" clothes which is so beautiful and casual.
She wears Current/Elliot, Adidas, as far as we know.
Information about Lisa Wesseler, here and here.
You can look my tumblr too, here.
Thanks to Lenda for the edit.