"I was the ONLY one who was constantly checking on my Wifey cuz I knew something was wrong," she wrote on Twitter on Thursday. "I was out of town 2 meet my Brother. I have all the text messages to prove it!"
Since Johnson was found dead on Monday, people close to her have criticized the MTV star, claiming she was a bad influence and exploited Johnson – before and after her death – for attention.
But on her official blog, Tequila says Johnson actually planned "to start a new life with me."
"Casey cut out a lot of 'bad' people from her past to be with me cuz I was a good influence on her," Tequila insists. "We were so in love."