Hi, I'm a 49yo man and have been wearing panties, nighties, etc. since I was 12.
I wanted to be a cute girl when I was 12 (and still fantasize about it). The term for this is autogynephilia: being aroused by picturing oneself as a member of the opposite sex. Anyway, I think you just need to be yourself, express yourself, and respect yourself. In the 37 years I've been wearing panties I have never made any effort to hide it from any of the 100 or so women I've been with. Most of them either weren't effected at all by it, or actually liked it. Women's clothes are much more fun!!! 'To thine own self be true'. Everyone else can kiss your ***.