I'm probably going to get chastised for this here, but I'll give you another perspective.

This sounds a lot like me.

I grew up very tough. I grew up with people asking me if I was actually transgendered. Everyone respected me, no one ever expected me to be "cute" in any way. So I wasn't. If I ever did anything girly, people actually stared and made me feel uncomfortable, so I didn't.

I met my now-fiancé, and he slowly made me feel comfortable acting how I wanted to. I could act more like myself, be more honest, more ditsy, less "on guard and on top of it" all the time. It was amazing and freeing to be accepted.

The older we got together, the more I started doing these similar puppy things. My fiancé, though, thinks it's adorable. I've asked if it bothers him, and he knows I wouldn't get upset if he said yes -- but he assures me the loves this as a way of me getting his attention and that I only act this way in front of him. When he doesn't like something, he tells me right away, and I make sure to adjust. Same with him for me, obviously.

But I only started acting this way because I feel safe and loved, and as I'm realizing more and more lately -- because I super want a baby.

I only started to realize this recently, but a lot of my behaviors started around when I realized if I got pregnant by accident, I'd definitely keep it, no questions asked, and it got worse after my fiancé started getting on the, "Man, it would be amazing to have a baby" train with me. Seeing him slightly disappointed when my pregnancy-scare pregnancy test was negative has made me worse.

This may be something similar with your fiancée. Do you guys want kids? Is she staring at them like she sometimes considers kidnapping one?

I'm not at a place where we can have one, so I take it out on my fiancé. If I had a dog, I'd take it out on him, but I can't have one of those yet, either. But thankfully, my fiancé likes it, and I'm just an overly affectionate person when I can be, anyway. I mean, I even want to do this to my bunny, but he's not a snuggly type of bunny, so I leave him alone. If my affection isn't wanted, I wouldn't be acting this way.

I think the problem is you let you go this on too long. Why didn't you stop her the first time and go, "I don't really like it when you whimper like that. It makes me uncomfortable." Why wasn't that your first instinct? Why are you trying to subtly "re teach her"? You shouldn't have to be subtle with someone you love and especially not if you're going to marry them.

The thing is, now she probably thinks you like it, and if you tell her otherwise, she's going to feel so embarrassed and violated that you wouldn't have told her sooner. The safe place you made for her is going to be severely rocked. People who are usually serious don't feel safe being silly a lot. You letting them, then saying "Stop that shit" is really going to rock things. All you can do for that is be prepared for her being quite upset over it and hope that the trust bounces back, and next time, be honest right off the bat.

I know people won't like this reply, because acting immature in any way is always frowned upon in this sub, but I don't really care. A lot of the advice is either very harsh and going to really hurt her, especially after you said nothing for so long, or very silly like "training her" and is still avoiding the actual problem.

Just tell her gently, "I'm very sorry that I haven't brought this up before, but these behaviors make me very uncomfortable." Talk to her about why, be ready for her to be upset and feel like she made a fool of herself. Because she revealed a part of herself she thought would be safe to do so, and you were secretly being annoyed by her the whole time. Then work your best to work through it and promise you don't wait before telling her the truth next time.

I really hope you find a way to talk to her about this without being as harsh as a lot of other people are recommending, but you actually talk to her about it instead of letting it fester.