Being Bisexual


So im a bit worried about what my family will think. A 6 years ago i come out as a lesbian to my whole family it was scary and now looking back i wasnt ready to come out i wasnt even sure myself but people just wanted me to have a lable. But now im afraid if i tell them im bisexual they wont take it seriously because i said i was a lesbian my family are really cool and super chill my uncle's are gay so its no big deal but im worried they wont understand the fact i can have feelings for both guys and girls.

Its making things hard i have been seeing this guy since june and i cant tell my family because idk what to say or how they will react.

Any advice on what i could do to help them understand would be appreciated.