Translation of unschlagbar

It looks like we need to invite Erika again to my home, once the cake is ready. Of course, this should be done before Sunday to stay in the chocolate cake race. We should buy cream too.
The fact that I have received many emails from students in order to make Vocabulix known is a personal success for me. But I think that a new website with many pages would be better for future uses.
The weather is never really good this time of the year here. I have found a new girlfriend and guess what: she is Spanish. Yesterday we went out for the 4th time. Tomorrow I will see her again.