I don't love my gf ....?

i dont like my gf ...and i feel lonely when im with her ... if i quit her ..she will think im so bad ...and she will get mad on me .... nowdays i am senseless ....i dont know what should i do ... i just want to sleep all days long without doing anything ....it sound like im lazy ..but i want to waste time to die ..i feel like i shoulnt be alive .....its getting worst