The man claims he had sex with Julie Wadsworth up to 15 times, between the ages of 14 and 18, including once when her husband Tony joined in.
He told the jury he sent messages to Mrs Wadsworth years after the alleged abuse when "drunk, depressed, or down".
Julie, 60, and Tony Wadsworth, 69, deny assaulting seven boys in the 1990s.
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The Wadsworths, from Broughton Astley, Leicestershire, who have worked for BBC Radio Leicester and BBC WM, deny five counts of outraging public decency between July 1992 and June 1996.
Mrs Wadsworth has pleaded not guilty to 12 charges of indecent assault and Mr Wadsworth denies 10 counts of the same offence.
The complainant, now in his 30s, told Warwick Crown Court: "I kept going back when the abuse was happening.
"I didn't really want to do that. Afterwards I felt guilty, it was terrible."
Mrs Wadsworth's barrister David Hislop claimed the accuser became angry because the radio star "rejected" his advances when he contacted her on Facebook and by email years later.
The complainant replied: "Yeah, I was probably too old."
The man also denied the barrister's claims he had become "wholly obsessed" with Mrs Wadsworth and that he reported the couple to police only after his "heartfelt" messages were ignored.
The man replied: "I had occasionally [become obsessed] - when I was drunk, depressed, or down.
"When I looked back on it and would crave it [sex]."
"It's probably why you're meant to have sex with underage kids isn't it, because that is what it does to them."
He has told the jury he reported his allegations to police after receiving professional child protection training.
In a Facebook message he sent to Mrs Wadsworth in 2015, he said he wanted to meet her.
It read: "Been years - I still look back very fondly on fun times xx."
Another said: "I hope you don't see me as a stalker or a nuisance or anything like that - I'm a genuine guy and do really look back fondly on our time.
"I learnt a hell of a lot during our friendly chats."
The man said he deleted the messages, hoping they were unread.
The trial continues.

Electricity North West said about 680 customers in Bury and 480 in Rochdale were still cut off.
The company has reconnected more than 24,750 customers in the past two days.
Thanking people for their "goodwill", incident manager Steve Cox said the "focus today is to ensure power is restored for the remaining customers".
Further updates about this and other flooding stories on the BBC live page
Elsewhere in the area, a major clean-up is continuing following the floods on Saturday.
In Rochdale, dozens of town centre businesses were underwater, after the River Roch burst its banks, while in nearby Littleborough, about 100 properties and two care homes had to be evacuated.
Rochdale Labour MP Simon Danczuk said more needed to be done to prevent flooding, including the diverting of overseas aid funds.
"Why do we spend money in Bangladesh when it needs spending in Great Britain?" he said.
"What we need to do is to sort out the problems which are occurring here and not focus so much on developing countries. That has to be our priority."
The Environment Agency have said flood defences across the UK need a "complete rethink" following the recent flooding.
The clearing-up operation in Bury has seen a housing association praise the "instinctive community spirit" of those hit by the floods.
Irwell Valley Housing Association's Cath Mustafa said about 100 of their residents had been hit and the "resilience of everyone affected and the instinctive community spirit to pull together at such a difficult time is truly astonishing".
Central Salford suffered its worst flooding for nearly 70 years as homes in Kersal, Lower Broughton and Trinity were evacuated.
A Greater Manchester Fire and Rescue Service spokeswoman said they had received more than 300 flood-related calls.
She said it was believed crews had "rescued up to 1,000 people in less than 24 hours when water levels rose so rapidly yesterday that whole towns were cut off".
An alleged victim of two ex-BBC radio presenters accused of child sex crimes told a court they later rejected him as he was "probably too old".
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More than 1,100 homes in Greater Manchester remain without power following flooding in the area across the weekend.