Donna,
Thank you for your post, your posts.
Looks like you came across something that he was trying to keep private and his response is like unripe fruit - hard, unyielding, not ready. Given more time and experience he may come to accept and enjoy being Ruth, "during Ruth time" and himself, his other self, just as much the rest of the time.
Along the way, speaking as a GG cannot, a man needs to decide what it takes to be a man and if he's up for it. Your guy may be working out who and what he is and what he can commit to. Be aware that he may be unsure enough of his experience in life to to mistrust your support of something he's not sure of himself: "Does she think supporting this will make me love her?" A man wants to be sure that he makes his OWN choices so that he can be proud to live with them. "I may have screwed this up. But, I screwed it up better than anyone else could have!"
Men are very emotional creatures. Make no mistake about that. Rouse them to battle and they will go to their deaths with a full heart. Touch them where they are tender, as with a sick child's unhappiness, and they will weep, then cross mountains to help that child. They are encouraged to be rational problem solvers, encouraged in many ways, but the point is they have to be shaped and trained lest they give in too easily to the same emotions everyone, men and women, have.
Your problem may be that you are dealing with neither a man or a woman. You may be dealing with a boy or a girl. Or, you could be dealing with some combination of boy/women/girl/man. Be wise in considering what you are getting out of this relationship. It is not your problem to "fix" this person so that they, then you, can be happy. Consider where YOU are, and what YOU want, and see where you need to go and who you need to be with to be happier. Your friend there may just not be ready to be happy with someone at this time. If they're not ready, they're not ready. Move on if you need to...
Thank you again for your posts. I don't think every woman involved with a crossdresser or TG person winds up with this situation, but it's common enough. I'm sorry you've bumped into this but let it be a learning experience. We only get better by living, learning, and doing better.
Good luck.