So I deal with similar issue and I'm am branded a liar because of it.
To share, I've come out to my wife to only be threatened with divorce, and ending of the relationship, and destroying my family and our lives. to preserve our marriage, and family, I've denounced my transgender nature, as me simply being confused (which really is a lie, as I'm not confused). However, my wife is dealing with this coming out and so there it is
1 - I'm a liar because I was confused
2 - I'm a liar because I have to be, to preserve the relationship
3 - I'm a liar because I didn't on dating early on say this was going on. The problem with this one is that it hadn't clicked yet. I knew I had a very colorful and quirky sexual and gender odd past, but it had never resolved into focus until way into my marriage, when I started really looking for answers to my feelings.
So in some ways ya I'm a liar, in other ways I'm not a liar, its self preservation.