Re: any idea whats going on
You cannot have it both ways. On one hand, the mother-in-law is too moody (since she had all of one meltdown. The adult to adult communication is clearly not working. (Your mother changing her mind 4 times in an hour is not my definition of an adult).
Your father in law possibly realizes that you are still interested. So he is providing guidance. It is not as if he is being inappropriate - he may be taking an unconventional route - advising the youngsters to chill out a bit, and not take things too seriously.
One should be really narrow minded to assign any other motive here.
what other motive could there be?
i don’t think it’s about the potential FIL having another motive I think she just found it inappropriate that he was discussing romance with her…which is understandable…everyone has their own sensibilities