I was essentially in the exact situation as you and I am so sorry you feel that way about yourself. I think if there is no trust and this person isn't helping you be your best, it's sometimes better letting go. Of course some couples can push through and become stronger. But I had to be real with myself. I couldnt take the lies and feeling so awful about myself while being with "the love of my life".

1. Your happiness is very important - do what you know is best for you in the long haul, not based on what you feel at the time
2. Self love is the most important thing before you love another, confidence is really sexy and attractive, you gotta own all of yourself
3. Don't be afraid for the future based on the decision you make, you will be fine :) we should all be living and present in the present!

And my collection of red flags from years of dating and relationships, I know now to run. Trust your instincts!