An estate agent accused of murdering his wife after she teased him for having a small penis has told a court she would regularly make fun of the size of his manhood.

David Clark, 49, is charged with stabbing wife Melanie, 44, in the chest with a cooking knife at their home after drinking with friends to celebrate New Year's Eve.

Birmingham Crown Court he launched the frenzied attack before dialling 999 and confessing: "I've killed my wife. She f*****g did my head in."

Police were called to the marital home in Cloverdale, Bromsgrove, Worcs., and South-African born Mrs Clark was pronounce dead 12 minutes into the New Year.

Jurors were told how on the night the couple had rowed about mum-of-four Mrs Clark having a lesbian fling with one of their friends' daughters.

The court was also told how the pair had a turbulent relationship and Mrs Clark had mocked her husband about having a "small d**k".

Today Mr Clark said his wife would often talk about the size of his penis and revealed she had also had a separate affair with a married man.

Giving evidence, he said: "She often talked about it. In comments and conversations she would always refer to it.

"She would just say it was small.

"It made me feel inadequate. I felt so sad.

"She would taunt me a bit and say horrible things. She would just bring these things up - I don't know why she would bring them up.

"She wouldn't always let me do things the way I wanted to do them. That made me feel worthless, like I did not have a say. I felt like a puppet."

Alisdair Williamson, defending, read a text message from Mrs Clark to her husband in which she talked about using a sex toy and wrote: "Yours isn't that small."

Mr Clark added: "I think she was talking about my penis."

Mr Williamson also read out an email Mr Clark received from a woman who claimed Mrs Clark had an affair with her husband.

Mr Clark said: “At first I did not believe it. But I came to believe that Melanie had had an affair with the man.

“We agreed that we would tell the other before sleeping around before we were married.

“I confronted her. All I wanted was the truth. I wasn’t horrible or nasty to her. I did not raise my voice. I just wanted the truth.

“I still love Melanie and I have forgiven her.

“After I moved back in with Melanie following the split, she was suspicious of me whatever I did.”

The court heard Mrs Clark had been so paranoid about her husband's whereabouts she installed a locator app on his phone which tracked his every movement.

Mr Clark added: "My wife put it on my phone. I did not really know how to turn it off.

"I was having problems with my phone. I did not have enough memory and I had to delete some apps.

"My wife checked my phone to see what I had been doing. She wanted to know why I had deleted the locator.

“She was really, really angry. She was so cross with me.

“I had no reason to hide from her or do anything behind her back. I was being honest with her.

“When she was angry she would call me names. She would taunt me She would get right up into my face. She was always angry.”

Breaking down into tears, he said: “Sometimes she would hit me. It made me feel I wasn’t a man."

Mr Clark, who was born in Durban, South Africa, and served in the military there, said his wife would also deliberately hide his belongings to get on his nerves.

Mr Williamson asked Mr Clark: “Do you agree you like things done in a particular way?”

He replied: “Yes sir.

"My work shirts were in order. The blue shirts were all together and my white shirts were all together. To me it was normal.”

Breaking down in tears, he added: “She mixed them all up.

“She didn’t like my liking things to be in order. She would change things on purpose.

"She would move my stuff so I couldn’t find it. She did not really care about my feelings about it.”

Mr Clark also told the court how the pair got together in South Africa while they were both going through divorce proceedings having known each other as children.

He added:“I got married to my first wife I think in 2001 or 2002.

"She was a lady slightly older than me and was a tenant of my parents. That did not last that long - about a year.

“I was about 12 years old when I first met Melanie. She was 11. She was my sister’s friend in junior school.

"She used to come to my house and my sisters were friends with her.

“When I went through divorce proceedings with my first wife, Melanie was also getting a divorce.

“My mother bumped into Melanie in a shop and said ‘David is back in South Africa’. Melanie asked ‘where is he working?’.

"My mother told her we were running a property company. Melanie phoned me to make contact with me.

“We started to see each other maybe once or twice in the early evening, meeting up at the gym.

"She wanted to be private - she did not want anyone to know.”

Clark, of Bromsgrove denies murder.

The trial continues.