Rape is sex without consent being freely given. The fact that it is currently legally defined by penetration doesnt mean it isnt rape, lesbians can and have been raped by other women with no penetration involved. Would you tell a woman who has been forced into sex by another woman, that she hasnt been raped?
As a rape survivor, you can safely assume that I know what rape is.
But there is a current belief that a man having sex with a woman, who has consented on the understanding that he is using a condom and then doesnt, is raping her. So logically, if a woman has sex with a man whilst not using the contraception she says she is using and in fact isnt, is also rape. It works both ways.
As I say, a rape survivor, but interested in the dicussion on why rape apparently only involves penetration, because in my experience sometimes it does and sometimes it doesnt.
ETA: No. Legal rape is penetration, it doesnt actually need to involve a penis.