Ne-Yo is engaged and his fiancée Crystal Renay is pregnant.

The 35-year-old singer took to Twitter to share the happy news, writing: ''Clearing the air..@mscrystalrenay and I are ENGAGED to be married next year. And yes we are expeciting #FromTheHorsesMouth (sic).''

He already has two children, daughter, Madilyn, four, and a son, Mason, three, with his ex-fiancée Monyetta Shaw.

The pair split in 2013 after four years together.

Crystal took to Instagram to share her joy and hit out at detractors, writing: ''No matter what they say our Miracle is on the way and I couldn't feel more blessed. You're negativity means nothing to us. We are happy, we've BEEN happy and will always be HAPPY no matter what they say Thanking The Lord above for those who know my story know what this absolute miracle means to me. #BabySmith #Neyo #CrystalRenay #GodsChild #WasAlwaysInHisTime #BlindFaith thank you all who are happy for our happy (sic)''.

Ne-Yo followed up the announcement with a message about Monyetta, after she revealed on VH1's 'Hollywood Exes', that she had her tubes tied when they were still together.

He wrote: ''Clearing the air..I didn't force Mo to tie her tubes. Mutual decision. And the procedure is reversible. #SheCanHaveKids #FromTheHorsesMouth.

Clearing the air..I'm aware I don't have to explain anything. I did it for my fans, my supporters. No BS and lies. #FromTheHorsesMouth

''Twit fam. THIS IS YOUR DIRECT LINK TO ME. From now on if you wanna know ASK ME. No 3rd party, no guessing, no BS #FromTheHorsesMouth (sic).''