Tila Tequila has taken to Twitter to grieve following the death of her fiance Casey Johnson, saying she's in "unbearable pain", writing, "I had so many beautiful big surprises for her this year that she would have LOVED! But now my beautiful Wifey has left me."

Earlier, Tila wrote, "I have to move out of this house asap! I cannot move on if I keep living here. Its just a huge dark reminder for me that shes not here anymore."

The reality star has received plenty of support from her 290,000 Twitter followers over the loss of fiance Casey, who was an heiress to the Johnson&Johnson empire.

But there's no sympathy coming from blogger Perez Hilton.

"Go back to grieving and exploiting her death. You're great at being soulless!" he wrote, adding, "If my mom died, I wouldn't be granting repeated interviews about it! I wouldn't be Tweeting repeatedly about my grieving!"

The two went on to trade increasingly nasty insults over several Twitter pages, with Tila eventually writing, "Scum like @perezhilton can f*ck off!"

Perez fired back, "If Casey Johnson could come back from the dead, she'd come and f*cking kill you for how you've been behaving!"

Ouch.

Tila has since logged off Twitter to spend time with friends and family, and Perez has also moved on. "I'm done with you," he tweeted. "Buh bye! xoxo"

Follow Tila Tequila @officialTila and Perez Hilton @PerezHilton.