Howard and Bernadette's relationship is strong because the couple supports each other in good and bad times. Howard and Bernadette also have a knack for helping out their friends when they are in need of support, namely Raj and Stuart.

Instead of a healthy, loving relationship, the hypothesis suggests that Howard initially created Bernadette to be his sex robot until she developed human consciousness, and the pair fell in love. There are three things that support this claim: firstly, Howard was an engineer, hence he knew how to build things.

They have a good relationship thanks to all the work they put into it." So while all the couples on the show may have their positive aspects, the best part of Howard and Bernadette's relationship on "The Big Bang Theory" is the fact that they seem to be two people sharing a grounded, believable romance.