Last night we were sitting on the sofa and GB was telling me how much he loved me. He was saying he got paranoid because he couldn't understand why I'd be with him, and he knew that if we split I'd be with someone straight away. I told him he was being silly, that I hadn't been like that before he met me, so why would I be like that now?

Then the phone rang. I answered it, saying 'hello,' but then I realised it was BT Answer with a voice text, so after saying 'oh,' I just listened. Half way through the message GB shouts, 'who is it?' I was having trouble hearing the message, so I said, 'I don't know, shhh.' 'Put it down,' he said. 'It's a message,' I said, pressing to listen again. 'Who from?' 'I don't know,' I hissed, because I'd missed the start of the message again, and he was annoying me.

'Don't look at me like that!' he grumbled. I just turned away and ignored him as he carried on calling me a bitch and a whore. I still couldn't catch the start of the message, and had no clue who it was, as it was talking about a 34th birthday party at the local curry house. I wrote down the number.

By this time GB was in the kitchen, and I was explaining in minute detail exactly what the message was. He accused me of having a boyfriend who was talking to me, otherwise why would I have gone quiet on the phone!!! Then he asked me why I was so angry if I wasn't guilty!!!!!

I told him he was being a paranoid idiot. By this time I'd looked through my mobile and found the number was L. She'd meant her 43rd birthday. GB refused to believe me, said I'd taken too long looking up the number (even though I'd been arguing with him at the same time), and had obviously been changing the name. But AHA! I played my trump card!

'If you're so sure this is my boyfriend's number, then phone it and talk to him.'

Well obviously he wasn't going to do that, because he suddenly remembered who L was etc etc. Then he sat by the back door crying and saying it was only because he loved me so much blah blah blah. I told him I loved him, even though he was doing his best to make me fall out of love with him.

We were fine after that, and again, the sex was fabulous. I don't understand why he won't trust me.