I have only had one sexual male partner, which is my husband, and yes I do/will share my sex toys with him.
IF I wasn't married, I still wouldn't share sex toys unless it was a serious relationship. I wouldn't share toys in only casual dating. I probably wouldn't even be having sex in just casual dating. I'm traditional. I didn't have sex until I married my husband.
Also, I did have a sexual relationship with only one female, but at the time I was in high school, and sex toys were not part of my life then, so there was no decision to make whether to share or not.