You're not any of those things.* And if he's using those as an excuse, it's not you, it's him.* Some people just don't know how to show affection.* And sometimes people get in a rut and just let affection cool off.
*
I think you should sit down with him and have a talk.* And if things don't look better, I'd consider making some changes.* You can't put your life on hold forever for someone that doesn't know what he wants.