Want to stop taking bc

faith
I want to go off my pill after i finish my 3month pack i currently have but idk how to tell my boyfriend we currently have a year lease in an apartment witch is about 4-5 months in and he has said he wants to start a family when the lease is up and we can move into a home. How do i tell him i dont want to renew my bc when it is gone at the end of agust