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Yes, I payed for food, Jem, and as I stated earlier, I payed towards the deposit, legal fees and pretty much everything but the mortgage, and no, we were a couple, so I didn't pay rent. My ex will have as much proof of this as I have I assume, and yes, it's worth the can of worms.
When I made the decision to do this, I was worried that people may think that I am doing this out of spite, but that is not the case, I now have a new man and a baby, however, we are living in a rented property, and if I am entitled to anything, that will go a massive way to making my daughters future that little bit more secure by going towards a deposit on a new house! As any parent will tell you, you will do anything that you can to give your child the best possible start, and if I can make my little girls "start in life" a little more comfortable by doing this, then I'm going to do everything that I can to make that happen.
Thank you for your help everyone, and Lofty, thank you for your words of support, it made me feel better about why I'm doing it!