The kids originally started asking for a puppy. I thought DH would be against it and not wanting him to seem like the bad guy alone I just kept saying no. I was at work one weekend and DH text me saying he really wanted to get a dog. I was so excited cause I've always wanted one and I asked if he was sure, he said yes. We waited about 2 months before purchasing her, we had to saved up (they are very expensive), find a breeder, buy all her supplies. We researched, planned, planned, and planned. DH was 100% onboard the entire time. The day we were supposed to get her he started having cold feet, I was very disappointed but said it was fine, we would back out if he wished because this was a family decision and a long term commitment. He finally said he was sure so we went on a Sunday morning and got her. Later that day I had to go to work so it was up to him & the kids to care for her. It started that same day, IMs & texts that it was too much, he had made a mistake

The next day, Monday, everything was fine as was every weekday since. But never fails, no matter how great the week has gone, about into 3-4 hours into my shift at work the messages start rolling in from him again.
I know my coworkers are sick of seeing me sit at my desk and cry

I sent him a message earlier with a lot of your suggestions...he said ok, we'll talk about things when he gets home from work

We'll see but the real test will be come Sat when I leave for work

Thanks everyone and keep the suggestions coming!
BTW: He's not mentioned this but I am starting to wonder if $$ may be a factor. I am wondering if he's thinking he'd be able to sell her and get that large chuck of $$ back. I'm trying to give him the benefit of the doubt that he wouldn't be so coldhearted to look at things that way