What should a brokenhearted do when you find out that your crush has a new girlfriend?

I had a crush on this really nice guy and i felt that i like him bec. he was such a thoughtful,caring and sweet guy.I don't care if he's not that good-looking.I just woke up one day and realized that i do like him and want him to like me and ask me to be his girlfriend. I started dreaming about him that we are together already and it was such a sweet dream that reality suddenly shattered into pieces when just a couple hours ago i learned when my close friend told me that my crush and this girl just recently became his girlfriend. I pretended to act and sound okay when my close friend told me about it bec. she doesn't know that i have a crush on this guy. But after hearing what she said, i ran outside and walked for awhile in a lonely place and as i was walking i couldn't help but cry feeling a bit jealous and felt inferior to that girl coz she was really gorgeous while i see myself as a poor little girl. I just wished i didn't learn to like him in the first place