Is it normal that i feel so lonely, no friends at all...

Talking to people is hard and I know but you just have to be brave and believe in yourself and don't let peoples negativity hurt you. You can do anything you want you just have to be brave and ignore the negativity

Hmm.. You love someone that treats you like absolute shit. Been in you're shoes. Things will seem dim, if you keep believing they are. Chin up and walk back into that environment with a positive attitude and confidence. People are drawn to that type of thing.. People that ignore you are the people that you are better off without, including you're girlfriend. Don't tolerate that high school mello dramatic bullshit.

It is good thing that at least you have a girlfriend in your condition.You should do whatever it takes to not lose the one in your life that you love.I dont think that your girlfriend ignoring you people around.I mean when you meet someone (with ur girlfriend), you should participate the conversation.If she cut the chat and only turn to u and talk, then she would have been ignoring them.So you do dont have socializing skills, then u should try to talk and be friendly with your girlfriend's friend.

You'll get there in time. Try not to despair!!! There are many young people out there feeling lost and lonely on courses. They are all secretly worrying everyone is getting on with things better than they are too. You definitely won't be the alone one thinking these thoughts, I can promise you that.

You have a girlfriend so you have the ability to attract people into you life. That's good, right? But you do need to talk to her about why she is blanking you like that. Maybe she's a bit on the nervous shy side herself and feels more nervous if you are there observing her interactions with others? I don't know. You need to ask her.

You can work on your shyness a bit you know. I don't mean change your personality or what makes you, you. I mean just let a bit more of yourself come out.

Look on Amazon for books. Look up "shyness" in a search on Amazon and you will see suggestions.

Go to youTube and look up videos "overcoming shyness" for help.

CBT (Cognitive Behavioural Therapy) would be good for you. Look it up on the internet. You can buy books on that. However, if you could afford to see a CBT therapist to work on this, even better!

Meanwhile, just keep getting yourself out there - stay interested in life and the right friends will come. It's good you are on a course - never shut yourself away because you feel shy, otherwise loneliness will become a self-fulfilling prophecy and you don't want that.

Hang in there, you can do this!!!!!

Dont let it get to you, try your best to calm yourself and try to be a bit more outgoing, I know its easier said than done, but please try. Take it from someone who has felt this way for 8 years, dont let 4 months of loneliness turn into years like I did.

I've got to agree with TareBear20 about the way your girlfriend treats you: NOT WELL! You deserve better. It does not sound like she is supportive of you in any way. She is not the right fit for you, and it seems to me that she is making matters worse for you. If you feel ignored by strangers, that's bad enough, but to feel ignored by your girlfriend, someone that you love and care about, and that apparently loves and cares about you? Now that's really bad! The way you described her treatment towards you is not very loving and caring and supportive. How old are you? You sound very young. Move on. There are other fish in the sea that will treat you much better. Find your own circle of friends. Maybe these people that she socializes with are not your type of people. Maybe you have nothing in common with these people and you feel that you have to fake conversing with them just to generate conversation. If you have the chance to find your own friends with same interests as you, it might be easier to converse with them. I feel that you are depending on your girlfriend far too much when she may not be as strong as you want her to be. She shows weak character by also ignoring you, just to make herself try to look good around those that ignore you. Very immature behaviour all around.
Good luck in finding your OWN path, your OWN journey.

I voted "yes" instead of "no" by accident.

No, I don't find this normal.
You need to grow a pair, and start talking to people more often. It becomes easier the more you do it. Ask your girlfriend for some tips, if you can. Do whatever it takes, but it sounds like you really want to get out of your shell, in which case you should try hard.

Best of luck!