I have so many girlfriends who are powerhouses: They have big careers, are fearless in traveling in third-world countries or a launching non-profit. But they won't text a guy for fear of being perceived as desperate. That is broken.

Look at what is broken in society, figure out how to make it better, and then, around that, formulate a business.

The men who use Bumble appreciate a confident woman, a woman who has a voice. A lot of men suffer from insecurity and fear rejection, too. Bumble removes that fear, as they don't have to make the first move, so it benefits both men and women.

I'd gone so far past my fear threshold, I'd completely given up on being afraid

I'm going to be honest. Up until I started work on Bumble, the 'f-word' scared me. People would ask me if I was a feminist, and I didn't know how to respond. The word seemed to put guys off, but now I realise, who cares?

Safety is something you should never have to pay for. If you're abusive or, say, not who you say you are on Bumble, you're gone. We have a zero tolerance policy.