今日me and her game over ............(why?)

Because  I saw stephy(my gf) and  a gril togetother again.

I met her in5:00 at fast food shop and I said we game over..

she ask me why and i said I see you and a gril togetother

she said is play and she(stephy) love me is ture.......

but i don't 信 her and i go out.................