A UK mother who had sex with a 12-year-old boy almost 200 times is facing jail.

The Sunday Sun reports Angela Sullivan gave the boy a pair of shoes after he slept with her for the 100th time.

The unemployed 36-year-old reportedly corrupted the boy after getting him drunk and performing a sex act on him.

According to the Sunday Sun, Sullivan sent her own son to stay his with grandparents so she could meet her victim.

When police arrested the single mother, they found a diary marked with stars against the dates they had sex.

Sullivan's offences were reportedly discovered after rumours circulated she had fallen pregnant to the boy.

She is set to be sentenced next month.