Geez, Confuscious, helpz?

Look, firstly there is this girl i met a friend of a friend, and now she likes me and i like her but, when i asked about her previous bfs she said 11, and she is like 12 years olds, geez i am like a year older then her and i have only ever had 6(gfs) see i am just wondering if it is normal for a girl to have had this mamy ex's and it's making me very nervous about going out with her, almost as if i am going out to get dumped:(