More Details From Alleged Bieber Baby Mama

Mariah Yeater REALLY wants you to know she believes she slept with Justin Bieber!

She sat down with Star Magazine, including posing for a cover shot, and filled them in with even MORE details then we knew about yesterday.

Mariah Yeater told Star that Justin told her she would be more than a one-night stand, implying that she would be more like a girlfriend.  She said that all changed after the short sexual encounter, which she claimed embarrassed Justin because of how quick it was.  She claims that he promised to give her his personal phone number to keep in touch with him, but changed his mind after they had relations.  She offered her number to Justin, but didn't have paper to write it down on, and she claims Justin said he would "remember it."  She also says that nobody could possibly be the father.