Can i get with my brothers sister my brother and i have the same mum but diffrent dads but his half sister has a diffrent mum but the same dad as my brother .i have a diffrent mum and a diffrent dad?

Can i get with my brothers sister my brother and i have the same mum but diffrent dads but his half sister has a diffrent mum but the same dad as my brother .i have a diffrent mum and a diffrent dad?FOLLOW ON FROM ABOVE I AM ASKING THE QUESTIONI am totally in love with my brothers sister, she makes me feel like know other person has before .we have decided to move in together and we are getting a place with in the next 5 weeks, but i haven't told my brother yet, that I'm totally in love with his sister , he has only recently got to know, as he lost contact with his farther for years.his sister is a very unique person with the same feelings and approach to life as my self She has many talents and she is a very clever person and is just the most beautiful person i have ever met.when i hear her voice my heart starts to flip, and i get butterflies in my belly, we live 210 miles apart, but soon will be reunited .the question I'm asking everyone is how do i tell my brother, and how does she tell her farther . The man that brought me up from the age of 2 until i was 5 0r 6 ,and i remember him well, as and i am age 33 now, and my brothers sister is nearly 17, but the age gap don't bother us at all, if your in love and you want to be with that person, that's final in our eyes.