Tamara Ecclestone feels like she is ''mourning the death of someone'' after her boyfriend cheated on her.

The heiress - who found out that Omar Khyami had been Unfaithful after a sex tape was delivered to her father Bernie Ecclestone's office - is so upset about her former partner's behaviour, she finds it difficult to get up in the mornings.

She said: ''Some mornings, I haven't wanted to get out of bed. I really feel as though I'm mourning the death of someone.''

Tamara was ''almost hyperventilating'' when she was summoned to see her father after he took delivery of the tape because she was so worried about what he had to tell her.

Recalling what happened, Tamara told Britain's HELLO! magazine: ''My dad called me and I could tell by the tone of his voice that there was something wrong.

''He told me to come over immediately and I was terrified, thinking something was seriously wrong with him. I was almost hyperventilating.''

Tamara - who has cut off all contact with Omar in order to move on - still can't believe what has happened to her because she and Omar had made so many plans for the future.

She added: ''I loved Omar so much and we'd been talking about having kids together. I just couldn't believe that this was happening to me.''