That was fast!

90210 star Shenae Grimes is engaged to British model and musician Josh Beech, according to Us Weekly. She's 23 years old, and he's 24.

"Josh couldn't see himself being with anyone else so he asked her and she is over the moon about it," a source says.

"They fell for each other hard and since they've met, they talk non-stop," the source continues. "If they're not around each other, they're texting, calling and tweeting back and forth all the time."

News that the two were dating first broke in July, and it's rumored that they had been quietly seeing each other for a few months before that. 

Shenae plays Annie on the CW's 90210 reboot, and she recently filmed a role in the film Empire State, opposite Liam Hemsworth and Emma Roberts.

The two plan to get married in England in 2013.

All the best to this adorable couple!

Source: Us Weekly

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