Hi dean
Unfortunately this often happens with couples, and I am sorry to hear that you are thinking of separating.
You need to ask your IP to separate the arrangements, so that you can effect a settlement of yours in the manner you have suggested. Is your partner going to be moving out of the property? You will need to vary the terms of your arrangement, and your IP will need to call another creditors meeting, however this is usually a formality and I am sure that you will not encounter any difficuties in making another offer.
What effect will this have on your partner's IVA - will they be able to afford to continue their share of the IVA payments without your continued support?
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk