In a sentimental way, I don't know how to do that. Simply I can say that I'm shy and I don't know how to talk to girls (I'm male), that I lack social skills (I don't think that this is my real problem, and please don't understimate this) or that it could be related to my sexual confusion. But it's all a mess.
When I say that I don't think that my problem can be related to social skills, is because I've used to feel calm and tons of ideas came in my mind so that I could find a way.

To explain this I've thought about this: when I hear or read people complaining about how bad they feel about their 2,3 years relationships problems, I notice that I feel the same about a girl I've seen or talked to like 2 or 3 times.
It is somewhat related to anxiety, but at the same time anxiety prevents me from finding a way to talk about this. I should solve this, writing and thinking about it, I'm not talking to you but I'm talking to myself. This is how I feel most of the time.
I want to have a small talk with someone, I don't do it, why? I don't know. I'm used to do it and I will eventually find out why later. I don't know what to say, I could talk about this forever.. enlighten me if you can.