Even if we were to break up, I would always love you. If we ever were to break up, I would still love you. Even if we ever broke up , I would still always love you. ----any combinaton of these would be correct -----you must use "would" not "will" because it is a hypothetical conditional

"fi we even were...." sounds unnatural - I think most people would simply say "If we broke up" or perhaps "if we were to break up" - the "even' makes no sense here. Because you are suggesting something possible or hypothetical, "would" is the correct form of the verb "to be".

If we even to ..sounds not so natural to me . i would use ,' even if we were to ' + ( all the following are correct )