I am a Rat female 53 and Boyfriend Dog 56, can we get a long together?..

we've been together for almost 2 years, we lived together for 15 months, we plan to get married, when is the right time to do this?..we would like to know also our lucky Day, Month and year..to get married, we love each other so much..and we will stay together till the end of Journey..I born in Sept 15 1960, and him in Feb 21 1958.