I am so happy for you! How great is it that you get to talk to him on a regular basis since you already feel comfortable with him? Hopefully you'll feel less like you're taking up too much room in his office.
Maybe you feel more comfortable with a non-Swede because you don't feel like he's beholden to the law of Jante. You can escape some of your own culture's biases and limits by talking to a foreigner. Speaking in English would just increase the psychological sense of that margin of safety. Just an idea.
Again HOORAY for you!