The situation where a person starts dating and completely forgets about their friends & family.
After the dating has ceased, they then act like their usual selves again.
Matt never answers my texts anymore to hang out, what gives? Oh I forgot, he is dating a new gal and has datenesia.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".