so TS ... r u saying ur perfectly cool with such a girl becoming ur steady gf / future fiancee / future wife / mother to ur kids?

do u know her history how long she has been FU-BU-ing around like this and how many guys she FU-BU-ed already?

Knowing all that are you still ok to be committed in her?
Not knowing all that, are you ok to just let the past slip pass and lead a ever happy relationship with this girl?
If you are not ok in NOT knowing and assuming you ask her, and if the answers she provide to u is a relatively small number, will u choose to believe her or will u have doubt in her answer? will u let this doubts shatter ur trust u have on this girl and further damage the relationship?

Can you look into her eyes 5 yrs from now and pretend ntg of that ever happen?