What do i do about my boyfriend ?!?

Well , we've been going together since august of last year :-) and its been long distance the whole time . Everything was PERFECT at first he would leave me sweet comments or write statuses about me . He even send me the SWEETEST good morning texts n not the typical ones he would right freakin paragraphs to me like almost every morning ! Im soooooo inlove with that dude i cant see myself with anyone else and we are going to meet up this summer ! Couple weeks actually (: . But lately he's been acting weird and its irking my nerves like he's often mean now and he rarely does the things he used to do . When were on the phone he's more interested in whats on tv thaan ME , he claims to go to 'work' but he doesnt even go everyday and when he's at 'work' its only for a few hours ! I tell him how that doesnt make sense and he precedes to say 'when your grandfather owns the company youre able to work when you want' but i didnt kno JOBS worked that way ! I thought if you are a no show then youre out of a job! And then when we text he would just suddenly stop replying and when i ask him what happens he seems to ALWAYS have an excuse smh . Am i tripping or could he possibly be cheating on me with a girl in his area :-( ?