My daughter was born on the 21st of January. We already have our son who is 4 years old :) so now we have our set!

When we were getting close to delivery we would try and prepare our boy for his sister but nothing prepared us for how he was going to change. We thought that he would be a little jealous -to be expected- but he's completely out of control. I feel like I ruined him :( . Not only is he acting out with me and his dad but also with her. I feel like I can't leave them in the same room alone..... Advice??