I just wanted to come back to this threat to say thank you and maybe to recollect my own thoughts. (I found much comfort in reading about other peoples experiences in this matter...) I am very thankfull for all of your thoughts and time!

One thing I came to realize is that I did not start this thread to complain. I am deeply in love and I know very well why I did choose to commit to this relationship and why I am holding on to it.
I know many things that are bothering us can be seen from different perspectives. And depending on whom each of us is talking to we will recieve very different reactions. E.g. most people who hear my boyfriends point of view will tell him to leave this liar of a girlfriend who does not seem to care about his feelings.
But the point is that we are still together although it is not easy for neither of us. We both feel insecure. We both feel neglected. And I think it is all unneccary. So I keep looking for ways to improve my behaviour.
Recently I felt very comforted and warm in our relationship. But I realize that this is mostly due to the fact that he is not discussing his negative thoughts and emotions with me.

Thank you all again!