Rocky Relationship / Trust Issues

So Me & My Boyfriend Been Together Since We Was In HighSchool , He Only Call Me Or Text Me When He Feel Like It....I Only Hear From Him One Day Out Of The Week , & I Just Don't Trust Him At All. I Have Trust Issues Really Bad , But I Really Do Love Him But I Feel Like He's Cheating On Me . I Just Don't Know What Else Too Do . We Talked About Our Future & Everything. Please I Need Some Advice.!!!!