Hello The Madcap: I think that in some way or another you need to air this all out with your gf. It may be she has simply become comfortable with you & doesn't feel the need to dress up for you anymore. I don't think you're an insecure freak. But just the fact that all of this is making you feel that way is reason enough to find some way to air it all out. This kind of thing, if left unaddressed, can fester over time & create havoc in a relationship.

Communication is key in any long term relationship. So the more honestly you & your gf can share your feelings, the better it will be for your future together. I know there is a risk here. Your gf could simply reject your honesty. She could belittle your feelings or simply refuse to talk about the whole thing. However, from my perspective, it's a risk worth taking. Continuing to allow all of this to simmer is, from my perspective, a prescription for ongoing unhappiness.