Cheating? As in having an affair? Surely no one should be doing that!

However, what she should do is break up with her boyfriend and then try a relationship with the girl. There's nothing wrong with a person being curious about their orientation and wanting to get a bit more experience, but if you're in an exclusive relationship then you should end that first.

It's only natural for a bi-curious individual to want to experiment, but it doesn't mean you have to cheat on your current partner. Be honest with them and assure them it's nothing personal. If they're a decent person they'll accept that it's important to you, and if they're not, it's probably a good thing you broke up with them!

Cheating is cheating.

It's still cheating, so yes, although the guy might be more willing to let you experiment if you tell him what's going on. Or, maybe he won't, which will mean you have to make a decision between keeping the boyfriend or testing relationships with girls.

Cheating no matter the gender of the person you cheat with is disgusting.