Your show your love her through your action. The
primary way of demonstrating your affection is through bodily
gesture like kissing and hugging. You take away those components,
effectively, you present yourself as unloving, regardless of how
much sacrifice you make for your partner (Especially so for Cancer,
Scorpio, Pisces).
Having to adjust is ok, provided if your girlfriend understands
from your point of view. It is likely that she didn't, thus this
mis-communication that axe your relationship to death. She may be a
woman that needs to feel affection from his man (not necessary
sex).
Known woman who constantly ask their man if they loved them?
Similar. It's to reinforced their stand and position, like kissing
and hugging is to reinforced your stand of being loving. 
Cheers
