A-God, I hope so! Have your parents ever annoyed you? Have you ever annoyed them? Yet you most probably love each other.
Loving someone doesn't mean you never feel other emotions towards them. In fact, loving someone often makes those emotions much more intense.
Try a few things.
Focus on yourself. How can you be more happy and fulfilled within yourself? Do that.
Focus on the things you love and appreciate about your girlfriend. You can never count on another person changing, so see the positives much larger than the negatives.
Evaluate whether you're spending too much time together. We all need a balance of together, others and personal time. Sometimes a relationship can feel exciting and obsessive at first, you set up these patterns of spending all your time together and it isn't sustainable.
Think of the adage, Man cannot live by bread alone. Too much of only one thing, or person, isn't good for us.
Embrace the paradox, Be separately together!