What is it called when an older man likes younger men?

Manthers are older men who pursue partners significantly younger than them.

What are you before a cougar?

Despite Moores attempt to use the terms interchangeably, a puma is widely regarded as a woman under 40 who prefers younger men while the cougar label is applied to women in their 40s and 50s who seek out younger male companions who are at least 10 years younger and often half their age.