Yes, they obviously can, and it's not up for political debate.
Tell you're feminist friend she's the sexist if this is what she belives. Even if she somehow thinks that females are incapable of rape (which is obviously not true in the slightest - they are capable of it and it does happen), there's also many examples of men raping men.
This also kind of reminds me about Todd Akin's 'legitimate rape' comments.
Also these two below posts are correct:
Anyone can be raped, our society just does a terrible job of acknowledging male victims.
The fact that this is even a question is concerning.
___________________________________________
If that feminist actually believes that they can't be raped, I'm truly stunned.
How do you know the feminist is male?