Hi there!
I do understand your need to share your life with someone else. In my opinión, it's the most marvellous thing. I also met my partner on the internet.
Said that, I would tell you that even when you are focussed on looking for a special person, don't stop paying attention to you, because you need to progress and overcome your problems with social anxiety or whatever. You need to develop yourself as a single person.

The fact that your relationship with that girl you liked didn't work, doesn't mean you are going to fail again. You are now wiser and have moré experience.
It would be convenient that your girl hasn't AvPD, social anxiety or something like that.
There are two things that helped in the relation with my partner: he is an extrovert and we were as friends "special friends" for a long time before I could trust him. He respected it and it was the key to success. No preassures.

Good luck!