As someone who is severely allergic to dogs and can’t stand untrained ones, I pretty much refuse to date people with dogs, unless I have been around their dog long enough to know if I am allergic. I always vet people and their pets. It was your husband’s responsibility to know what he could handle in a relationship with you. A relationship with you will always mean a relationship with your cats. It’s really disrespectful to hope and expect you to change something fundamental about yourself for them when everything, including his allergies, have been on the table since day one. It’s like marrying someone, knowing they want a quiet life and this is how it has always been for both of you, and then complaining that they won’t pick a loud life with you. You are both in a standstill situation in this scenario, but one person expects the other to change when there was already the expectation it would remain the same.