I did go to individual counseling for the conflict avoiding behaviour over a year ago. I think it has helped me to communicate more clearly my thoughts and feelings, but sometimes I just don't see the reason to bring up a sensitive topic when I know it'd hurt someone else.

This isn't how it works. Dating is all about finding someone you're compatible with. If you can't communicate honestly with your partner, you're simply not meant to be. Relationships aren't always sunshine.

And yeah, by not being open, you simply make life easier for yourself. Not wanting to "hurt others" is very often an excuse.

She, of course, wants to make friends and she loves doing social stuff (with me and my friends for example) but I think she doesn't know how to meet new people and make other friends. But I can't really help her with doing that - I also wouldn't know how to do that.

Go to meet-ups, join a club, start a new hobby, take up volunteering...