I've been dating this guy for a year a half and I'm completely comfortable with him and can tell him everything but he won't open up to me. He will tell me he loves me and will show it but when it comes to expressing his feelings in words he can't do it.
As long as he's showing you love it doesn't matter what form it comes in. guys are very different from girls. sometimes we can't put how we truly feel into words. sometimes its all the little things we do that shows we love you back.
Some guys only know how to SHOW you love as opposed to saying what they feel. If he is showing you love and he makes you happy then that should be good.