i consider myself a social person, i have no worries when it comes to meeting people for the first time. Thanks to working in customer service it has helped me over the years to become a confident person. I am very social when it comes to my circle of friends.

The problem i'm having is actually socializing with my Gf's friends when we are out together. If i can give you any kind of feed back when im around her friends i would say i'm the kind of person that is just replying rather than initiating a conversation. It makes me feel uncomfortable just being the guy that replys to certain conversations. keep in mind every time i have socialized with my Gf's friends it is when we are getting stoned and i'm the type of guy that becomes the lazy-fallintothecouch-stoner. you could say just don't smoke weed with them but then it would be very weird imo when everyone else including my Gf is blazing up.

I'm not quite sure if my social-actions have come of awkward but my girlfriend hasn't seem to give of any kind of signals that i'm acting awkward. Any feedback would be appreciated.

edit: Even though i'm social in my own life and world, i'm finding it difficult to be on the same level with my girl friends friends. any tips?

Very common. Women are way more chattier than guys anyway. There are millions of guys who do no more than grunt a couple of times if out with their gf and her friends. Not a big deal & nothing to worry about IMO.

It doesn't matter if you just reply and not initiate.

What matters is that your reply should be humorous or deliver a certain value.

I was there at some point when I started out.

The main issue here is that you don't know them well, yet. Try to find out how they all met each other and start getting to know them more. Just open up and they'll open up too, easy as that.

If you simply can't relate in any way, it's because they aren't the type of people you can hang out with.

It's more of a DHV in your gf's eyes anyway if you just act like they are all annoying little sisters rather than trying hard to build rapport with the group etc.