(First I must say, I'm not a native English speaker so apologies in advance for any mistakes I make.) Hey guys, I hope to get some advice from you. Been a lurker for some time and trying to improve... Today happened something that happened more then once in my life... I'm 21 years old, never kissed a girl or needless to say slept with. I have some friends and my social life is pretty decent, not the best though.

Today I went to a birthday party of a girl friend of mine. I went there with another colleague which I know pretty good. There, I met a few girls I knew. One of them, lets call her L, is a girl that I was really attracted to several months ago when we had some work together ( not anymore though). As a good fella I am, I went to say hello and tried to chat a bit. My other colleague thuogh was a lot closer to her and she didn't refuse on hugging him all the time and so on... He is a really nice guy, has a girlfriend which he really loves and I know there is nothing between them.

After I didn't feel like this party wasn't that fun for me (most times I really have fun... not this time.) I've decided to leave.

A little before I left this colleague talked to me and asked why am I leaving so I told him that I don't feel that connected (the birthday girl, him and L were the only ones I knew on some level) even though I tired chatting with some people there with not much success.

After I told him that, he said that he thinks that I must OPEN UP.

Guys, this is not the first time someone tells me that, yet I always miss the point and don't get it. I'm pretty certain this is the reason for my lack of success with the other sex and social circles, yet I almost always on my shit and have tons of fun.

Probably something is missing there or I just don't see reality as it really is.

Please guys, give me some advice. How can I improve that? What can be done? How can I solve this in order to improve my social circle and results with girls?

Thanks!!!