Last month, Celebrity Big Brother star Lee quit Twitter after being bombarded with hateful tweets from online users.
The Blue singer has continued to use Instagram to keep fans updated with his life, however he briefly logged back on last night (25 March) to ask why he was still receiving abuse.
Lee blasted: "I used to love Twitter but I just can't be on here. I'm gonna stick to my Instagram @LeeRyanMusic this place is full of Jeremy Kyle rejects.
"Don't get trolls. Feel sorry for them if anything.
"I do try to ignore them (replying to all now) but for f***'s sake I mean, what's the matter with these people. Are they sick or just unhappy?"
I mean you hear of kids killing themselves from this kinda thing. Most of the nasty comments come from adults. It's a real issue. #bullying— Lee Ryan (@LeeRyanMusic) March 25, 2014
Lee continued: "I mean you hear of kids killing themselves from this kinda thing. Most of the nasty comments come from adults. It's a real issue. #bullying."
During his CBB stint in January, Lee became embroiled in a love triangle between US star Jasmine Waltz and British glamour model Casey Batchelor - which infuriated viewers.
After leaving the house, Lee admitted that he'd even received death threats from warped fans.
Earlier this month, Lee reportedly split with Jasmine.