i got to say i agree with dot break up and stay friends with both (if they will let u) and if you and them are serious it will work out otherwise trust me the right one will come along when it's time so don't rush love

perfect example is my brother and his wife, i went to school with her and her and my brother were always just friends thou school and college and through both of there other relationships than finally they started dating and few years later there married ( 8+ yrs now) and still going strong