Okay, so I had things going well with one girl. Then, suddenly we started talking about weddings where she was going to, just to drink and dance & have fun.

I said, "Cool, so what does the avec need to wear", she said "A suit ". FROM HERE THINGS STARTED GOING WORSE. I started asking, is it ok if I wear that and that.

She was just relaxed about it, I was like "Omg, what do I do". She was just laughing.

I have a feeling that she maybe lost her interest in me (we havent known for too long)

So do I need to do anything specific to recover from this, like be extra relaxed about things? Or do I just keep playing my normal game and nevermind the whole thing.

It seems like you know that during this conversation with her you appeared to be unconfident and you know that it is an unappealing trait for most women. If she was laughing (yes, even at you) she was just enjoying the moment and not neccisarily judging you. Next time you see her be more confident in your tonality and body language but don't be too serious, throw some jokes out and even bring up that stressful moment you two shared and just joke about how you were freaking out over nothing. Being able to make fun of yourself is a good trait to have and she will like it. Good luck buddy but I dont think you need it =P

Try having fun while gaming, coz that's how game is ment to be. to be enjoyed. by both parties ofcourse.

Thanks for encouraging!