He wasn't there last night. We ran into them one night when we were out. I just flat out asked how they feel about it. And they both said they want to see me happy, and have no problem with me dating.
I think most kids are pretty observant. Most likely they knew very well how unhappy you were and what was happening with your husband's alcoholism.
When my mom started dating after our parents divorced, we were ecstatic. She deserved (and deserves) so much happiness, and so do you.