Never settle…settling causes you to harbor resentment and once that starts “, it’s very hard to comeback from it. However, what is it that he’s not meeting? Have you told him? Have you given him a chance to correct it and make it right. No one is perfect as we all make mistakes, but if you haven’t told him about it and given him the chance to correct it, that seems a bit brash. Now if you told him and he’s not trying then yes you have that right to move on, especially if he’s not trying.