Unique.... I just spent a lot of time thinking and talking about this issue myself.

Here is my theory:
If a mate picks on you, or is "teasing" you in a way that is deliberately pointing out flaws or weaknesses, then this is cruel. This is mean spirited. Usually, this is done to make the "teaser" feel better about themselves. This is a huge red flag that the person might be controlling, manipulative, and/or pathological.

If you've addressed this issue and it continues... well all I can say is that for me, it always got worse and never better. He should be complimenting you more than picking on you. Praise rather than complaints.

There is a huge difference between good natured chiding and mean spirited "picking". If he is hurting your feelings, it is the latter.

I wouldn't make it into a big fight!! Communication is the key! You need to sit down with him and talk to him. If he doesn't listen to you then you need to say "Hey, I am totally serious..this needs to stop or I am going to have to end the relationship."
If you are really bothered by his teasing, just be totally honest with him. But you need to tell him UNTIL he really gets it!!!

As much of a fan of make-up sex as I am, this looks like game playing to me.

Just be honest with him and if he doesn't care that he is hurting you, then find someone who will.

You're way too pretty to take ****, so I'd say, tell him. If he doesn't fix it then he's not worth the time of day.

Do women really do that? It would never occur to me to use sex as a weapon to get my way.

I don't think ugly women should take **** either. It's not just pretty girls who deserve to be treated with respect. We all do.

Not for too long, but just enough to let him know

I once read this is the worse thing to do. I still think you need to communicate and tell him exactly how you feel. If he doesn't listen then you need to tell him that you need some space until he will listen, he will stop IF he truly cares about you!!!

tell him this next time he does it ::it's pretty sad you have to put me down to make yourself feel better : that should shut him up and tell him evertime . he will get the hint

I would do it back, then tell him to shut up and mind his own **** business.

Honestly, I am one of those people who thinks "communication is key", but I just don't know what I can say for him to realize that I'm serious when I say it's just getting old.

I totally agree. Everyone deserves respect.

Mike and Diamond are right. There are insecurity issues here. To find out how serious it is, you will need to confront him about it. Get in his face and make him discuss it. If he refuses or if he says he will change but doesn't (or if he gets worse) it is a serious problem. Whether or not you want to stay with him and help him work through it (if he seriously wants to) is entirely up to you. Only you know the depth of your feelings towards him.

If he nit-picks everything that makes you 'you' he doesn't really value you. Which makes me question why he stays in the relationship. The first thought that comes to mind is that it is easier to stay than to find someone else and some people just want to be with anyone rather than be alone. If he doesn't value you, then why would you want to stay. How can everything else be great if all he does is make fun of everything about you?