<human>: Can you succinctly summarize the text in 1-3 sentences?

I (32M) set up a date with a new girl (28F with mutual friends) for tomorrow, but realized I double booked. So I asked to reschedule and now I hear she's not interested in going out with me anymore. Is rescheduling a first date considered bad, rude, or a deal-breaker?

Please help me understand this one. People change their minds, reschedule, and cancel on me ALL THE TIME. I don't think it's a big deal as long as they're professional about it. "Sorry, can't make it on Tuesday. How about meeting up Monday instead?"

What do you think?

If you want more details: Wednesday - Set up date via phone for next Tuesday. Friday - Realized class I signed up for a month ago is starting on Tuesday. Saturday - Called/texted her explaining the situation, asked "Can we meet up Monday or Wednesday instead?. Monday: Hear from mutual friends that I fucked up, this is considered rude, and I'm not getting a second chance with her. End up confused on reddit.com/r/relationships.
<bot>: Made date with girl, realized I double-booked, asked to reschedule, girl not interested now, heard I fucked up. Is rescheduling a first date considered bad or rude?