3. You may eventually fall out of love.
Not all the marriages and partnerships exist infinitely. Do not be afraid to admit that you are no longer into your girlfriend. Yes, it sounds hurtful and offensive, but such things happen and you have no other option than to say it aloud. Maintaining burnt out relationships is no healthier than keeping a dead pet just because you used to love it so much when it was alive. Some things should be buried, the sooner – the better.