As a repeater control is inside the form view than you should bind this repeater control inside the form view's event DataBound threw that you will be get exact data which you want to get. Put your following code inside your FormView1_DataBound event.
Repeater r = ((Repeater)FormView1.FindControl("repeater1"));
r.DataSource = GetMyData();
r.DataBind();
May be this solution can help you....