[ I know...but now always exists, doesnt it? ]
Past present future exists in time..
Time may be a third dimensional concept/mendation/idea..
There may be a higher “tense” than future..
example: Greek has “tenses” that English does not have..
http://www.englishpage.com/verbpage/verbtenseintro.html
There may be, but as long as we are alive, we’ll always be in the now/present.