R&B newcomer Tinashe has slammed rumours suggesting she was involved in rapper Future's split from his former fiancee Ciara, dismissing the gossip as "nonsense".

New mum Ciara dumped the hip-hop star in August (14), just three months after giving birth to Future Zahir Wilburn, her son with the rapper, amid tabloid speculation her beau had been unfaithful with Tinashe, who he collaborated with in 2013.

Ciara and Future briefly reconciled, before splitting for good in December (14), and Tinashe was allegedly spotted out with the rapper in Los Angeles on Monday (09Feb15), fuelling the claims of an affair.

The rising singer has since taken to Twitter.com to silence the rumours.

In a post on Tuesday (10Feb15), Tinashe wrote, "havnt (haven't) seen or spoken to future since we recorded our song together (in) 2013."

She then added, "It's a weird feeling waking up to completely 100% made up and Untrue rumors, and people believe them! Lol (laugh out loud) Gonna take some getting used to!

"Sorry I usually don't speak on nonsense but it just bothers me to be known as something I am completely not. I will try 2 (sic) remain positive."