My boyfriend stole a giveaway intended for my cats. I don’t know what to do

Problem/Goal: I know this sounds strange, but I need to be honest. I’m really hurt. I entered a giveaway to buy food and supplies for my cats and I was the one who commented. While I was sleeping my boyfriend took my phone, saw the reply, messaged the giver, and when the money was sent to my account he took it and used it for online gambling. It’s all gone. I’m so angry and heartbroken, that money was for my cats. I don’t understand how he knew my PayPal password. I feel like leaving him and taking the cats because I can’t live like this anymore. 😢