Nick Gordon said he'll "always love" Bobbi Kristina Brown in his first tweet since her death

According to ExtraTV.com, he wrote: "I look at our pics sometimes it makes me smile sometime I cry @REALbkBrown #happymemories.

"I'm so happy/blessed that I had @REALbkBrown in my life. i will always & forever love you. (sic)"

Bobbi Kristina spent six months in coma after being found face down in a bathtub in January.

Nick recently denied he gave the aspiring singer-and-actress - Whitney's only child with ex-husband Bobby Brown - a 'toxic cocktail'

and submerged her underwater.

In a statement, Nick's representative said: "Nick has been heartbroken and destroyed over the loss of his love and it's shameful that such baseless allegations have been presented publicly.

"Nick has engaged civil counsel and intends to defend the lawsuit vigorously and expose it for what it is: a fictitious assault against the person who loved Krissy most."

Bobbi's conservator claims Nick "gave Bobbi Kristina a toxic cocktail rendering her unconscious and then put her face down in a tub of cold water causing her to suffer brain damage".