It may seem weird but I agree with "Finally" and "50bucks". Yes, "The show is becoming a little bit boring and repetitive", thus TBBT needs new developments, new plots and a new mix of character development. But, it does not need these developments in the traditional way as every other damned sitcom. Why can't you leave this boy-girl-crap out just this one time?
You have had the best start with a show about weirdos why do have to turn into normal, boring or annoying people?
Why does every sitcom revolve around the same topic? Love, love, loveit made TBBT special as it did not revolve around that all the time and if, it only did in a weird and twisted way. Now the "new developments" of the TBBT turn this show into a boring show like all the others.
Writers seem to think this is an "evolution" for the show BUT IT'S NOT!