I promise you that I will put more effort into our relationship so that it goes a long way. I am sorry please stay with me. I love you.
I will make up for all the days I ruined. Please forgive me. I am sorry.
I promise you that I will be a better person from now on and I will never hurt you again. I am sorry.
I did not mean any of the harsh words I said earlier. I am sorry for being immature. Please forgive me.
I am sorry from the core of my heart for hurting you this bad. Please forgive me. I love you.
Ask me to do whatever you wish for. I will do anything for you. But please accept my apology. I am sorry.
I am sorry that I misbehaved with you. You know how much I love you. Come back to me again.
I know I create unnecessary arguments between us. I promise you I will not do it again. I am sorry.