what will happen if i put blonde dye in my brown hair without bleaching?

chances are that the semi permanant that you used is a quasi in which case the blonde may not lift the colour because tint will not lift tint prob. best option is to have a few lighter high lights

i have dark brown hair, i dyed it with blonde dye because i wanted a shade lighter so it looked more natural, but trust me it was the worst idea ever, my roots are now ginger/blonde, and it wont go away, i have dyed it twice since back brown and they come strait back through, dont do it!! get professional to help out xx

I privately think Black hair and Brown eyes are more attractive on men

i wouldn't risk it if i were you. if will probably go orange due to the pigment in your hair. if you do want sheen to your hair, why not dye it a nice chocolaty colour. it doesn't have to be too dark.