JLS have announced that they are calling time on the band after five years at the top of music business.
Aston, who has been tipped to go solo after the break-up, told The Sun that when he told his mum that he had "some big news" she immediately thought there was an unwanted pregnancy.
The singer, who has a reputation as a ladies' man, said: "The first person I told about our plan to call it a day was my mum.
"First it was just a text saying, 'I've got some news'. She replied in seconds with, 'Who is pregnant?'
"So I called her and told her not to worry, and that me and the boys were going our separate ways."
Aston, a judge on Sky series Got To Dance, said: "She is hard to shock but she was obviously upset. The whole experience was lived by all our families as much as us."
He said of his future career: "I plan to explore as many avenues as possible - with no pressure.
"I'll go and do some acting, audition for roles that could be for sitcoms, could be for films, could be for plays.
"I'll do stuff that's no pressure for a while, instead of being in the relentless cycle of a boyband."
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