I gave away my boyfriends dog because I was jealous that he loves her more than me
OMG you didn't do this did you? Why?
It is because of the fact that I always found her being so cute so I wanted to have the same adoration. However, my boyfriend ignored me all this time.
You have no right to give away someone elses pets. If you were getting jealous of your partner's dog then you should talk to them about that instead of just getting rid of the pet.
Stupid, man I don't care about that anymore.
If you feel you are not being treated right you should break up. Now you have only cemented his hatred for you, if you know where the dog went you need to get her back.