If you find yourself "stuck" in your relationship/marriage, then you have a problem. It might be a good time for self-evaluation. Once you love someone, the only thing that changes is your perception of that love and it's based on the individual. This requires more of understanding self. Love never actually dies...it's our individual perception that changes with regards to it.
Yes i would give it another chance but if its like years years already and there is no improvement on emotional growth, then i have to let go.
Some people are scared to leave a relationship because they fear of not being able to find someone to love. That's not true, in time you will meet someone who will love you and you will love also in return.