I really wanted to like this story more. Overall, the basic premise was enjoyable. 
 Over protective brothers interfere in sister's ability to date/have a love life. Sister meets a brother's best friend and begins a secret relationship. 
 The secrecy, however, just went on and on. Then, she had a freakishly hair trigger temper. She would get mad and start yelling at a drop of a hat. And, apparently, if she drank and became angry, she would get violent. 
 The heroine also seemed completely clueless about her family. I realize that she came into the family late, but still, you'd think that she would understand the dynamic a little bit better. 
 The thing that affected the rating the most, though, was the numerous grammatical and editing errors. 
 It's "pecs" not "pecks". 
 It's "wince" not "whence". 
 It's "too" not "to" (or, at times, the other way around). 
 And, in the infamous words of Ross Geller, Y-O-U-apostrophe-R-E means "you are," Y-O-U-R means "your"!