Translation of Schwierigkeit

Let me know how we can proceed and how I could help you further. I am looking forward to share lessons and maybe meet you in person in Singapore one day. Kind regards to you and your wife.
They wanted to know everything about relationships in Switzerland. One of the asked me of how guys propose friendships to girls. I did not know what she meant and explained that we were very informal.
Luckily for him, his wife stood by him and explained that he was clumsy and that would happen to him all the time. Anyway, it none of our business. We all had dinner afterwards and went to sleep.