p = you liked it.
q = you should have put a ring on it.

pqp -> q
TTTYou liked it and you put a ring on it.
TFFYou liked it and you did not put a ring on it.
FTTYou did not like it and you put a ring on it.
FFTYou did not like it and you did not put a ring on it.

∴ If you liked it then you should have put a ring on it. Q.E.D., bitches.