Perssuasive letter

Dear Ayo:

We have been together for 12 years and all of this time you have been the best thing of my life, I know that we have a nice life and  is perfect as it is now , I think that we have been together for a long time and I'm ready to go to the next step and to formalize the relation that we have. How you know, this is so difficult to me, but I'm gonna ask you if you want to marry me, spent the rest of your days with me and keep having this beautiful family. 

Waiting your answer
                                                                                                       Your love Ayo