After Clint had retired from the Avengers, officially, he started to go through withdrawal. He missed going on missions and fighting the bad guys, but his new priority was you and he needed to protect you and his family. So as time passed, while you were at work one day, Clint took it upon himself to go buy a cat. You did not like cats at all, so when you came home, you weren't happy.
"Clint, what the hell is that, is that a cat? You know I'm allergic and I hate cats!"
"Oh come on babe, are you really going to make me return her? I mean come on, look at this face."