is my husband gay or bi?

hes 30 we've been together for 11 years. he sometimes tries to have anal sex and seems to like toys in his anus. he hardly has sex with me now over the last 3 yrs maybe only like once to three times a month. when i used to ask him when he was younger if he would ever consider sex with a man and he used to say no way. about 6 months ago i was asking hypotheticals and he told me about the kinsley scale and that everyone is on a range of spectrum and he has thought about it once or twice but could never actually have sex with a man.