Translation of Seehund

The mothers of my girlfriends were so insulted when I never wanted to eat their food. I mean, in the beginning they liked me, but once the saw my eating habits everything changed. I guess I blew it.
Completely different education and lifestyle make us incapable of putting ourselves into their situation. Sometimes we regard certain acts or certain laws as barbaric while we ignore the surroundings.
I made plans to visit a surfing contest with a girl that I have met on the first day. We agreed to meet at ten in the morning at her place. I couldn't keep my eyes open and decided to quit.