I've been dating this girl for the past 2 weeks, and from what I can tell things are going great.

My question is, when is it appropriate to start saying stuff like "I missed you?"

That obviously puts me in a vulnerable position, and gives the power to her (which I'm not too comfortable with). On the other hand I really like this girl, and I really do miss her all the time.

What do the more experienced members think of this?

there is no time line to saying these things I think if you do miss her say it in a more tonful dominant way so instead of saying "i really missed you" you could text her while she's walkin away from you somthin like "waw i see that tush movin left and right away from me and i already feel like i'm missing you :p" putting i miss you in a sexual and humourous way shifts the situation from power struggle to what we call an exciting relationship. now what i gave you above is just somthin to demonstrate what i mean, if you do feel like saying somthing and your not really sure always put a twist on it either sexually, humourous, or even a small neg at the end of the line to loosen things up. girls don;t like guys that come from a scarcity point but a place of abundance and establishing that with her constantly by playing a role of alpha male would gaurentee a response back from her, this can be good for long term relationships also; as it tends to spice things up. a piece of advise for the futre.

good luck buddy

I couldn't have said it any better myself. But another powerful way of doing things is to say something along the lines of just letting her know you were thinking of her. Not actually sayiong you MISSED her. Buttell her you were doing something that reminded you of a time you spent together - or tell her that you were just remembering something you two did. It can be powerful to do so. It also doesn't DLV or show her that you are clingly. Just shows her that she means somethin to ya or that she was on your mind. Hope this helps!

If you did miss her, why wouldnt you let her know?

It is a difference between being needy (like making that the only thing you talk about) and being honest and sweet. "Its kinda strange, we have known each other for not very long now and today I actually missed you, we always have so much fun together, you are now officially in my inner circle!"

depends on the girl though..my gf HATES the sensitive shit if i ever said that to her ^ she would be really turned off

Youre right, it depends on the girl. I have had some that would get really angry with me if I didnt tell them every day after work. And I have had some that never says it at all.

saying i missed you should be used occasionally just like complimenting her.. If you over do it then she will be gone for sure but if you do it at the right times then she will love it.. its almost like giving her a present, you wouldnt wanna shower her with presents now would you? And there really isnt any other way to say i miss you than i miss you lol