Leave, life is too short. One day you will be on you death bed. Hopefully many decades from today but one day you will be there like all of us. On that day you should be able to look back and say to yourself I had a great life. I took advantage of the gift of life and I have little or no regrets. Now just because you leave doesnt mean you wont spend the rest of your life with this man. If he truly loves you he will make the changes needed to make sure you both are happy. My wife did it to me before we were married. I was turning into my father and I didnt even realize it 6 months after we moved in together. I couldnt hear what she was saying until one day she said she was leaving me. Luckily for me she never did, I listened to her and I changed for the better. We are now happily married with a beautiful 10 month old son. Back to you, if he loves you the way he should he will make it right, if he doesnt you will find out soon enough. Good luck I wish you the best.