Friendship or relationship

Male: april 26th, 1986 Tiger
Female: may 9th, 1988 Dragon

Ive been with my girl now for a year and have been wondering what the best scenario would be, as far if we should be together or just stay best friends. we've been clashing for the last year that we've been together and she has Major Insecurities and always accuse me of cheating or talking to another female.

What should we do?