@Cat I don't think he is cheating, all you need to do stay is stay in contact even if its for ten minutes, a lot of people automatically thinks he is cheating but that's not necessary real, it could be that he is busy with work or have things going on with his life and doesn't want you to get involved i suppose its best you call him and talk to him use should tell him how you are feeling or else it will hurt the both of you or go and suprise him and visit him, talking is the best option. Long distance relationship biggest problem is that you can't keep in touch with each for a long time but so long you two bond is strong and you love and respect each other you don't have to worry.
uhhhh... I've got no idea what to write so yeah, umm have a nice day I guess