Harkness smiled when he heard those words of starting over. He couldnt be any happier. Walking over to the Doctor, he slid his hand into the Doctor's with a grin on his face. Guiding the Time Lord to the door, Jack knocked on the white door before him, waiting ever so patiently. Not too long though, the door opened to reveal a female with fire like hair wearing a dark crimson long sleeve shirt, black hoodie jacket with red trimming, slightly torn dark blue denim boot cut jeans, and black leather combat boots. Her eyes were a hazel color with a slight red in them. She indeed looked like she was eighteen year old. The female looked over to Jack, the two smiling as she basically glomped him. Jack managed to keep standing as he caught her, giving her a big greeting hug.
"Happy Birthday chicky!" Jack congratulated, letting her go while setting her down, soon placing a kiss on her cheek. 
"Thank you, Jack." She noticed the new face and looked at him with a slightly tilted head but smiled. "Who is this new face. Friend of yours?" 
"Boyfriend." Jack stated. "I know I havent told you much but he came to visit me yesterday and I thought it would be more fun to bring someone with and meet a new face. The more the merrier right?"
She nodded excitedly. "Yep!" She then look from Jack to the new face. "Name is Arwen Serene." She held out her hand for a hand shake.