Do i suffer a psychological sickness?

I'm 22 and I've dated several girls but I don't have any feelings toward them... i just use them for benefits...food, laundry, buy me ciggs, clean for me...but we always and eventually break up... i was in love once when i was 16 and that girl broke my heart... I did realize that she was no good for me...but its like... I cant have that feeling again..of being happy ... i thought maybe the reason is..the girls im with im not fully attracted to...i'm simply confused... I feel like i have cold feelings...Do i have depression? i know I'm not giving enough required informations...but do anyone suffers the same thing ? and im not gay..just to make it clear