What should I do?

Okay so I recently ended a two year long relationship. This guy and I were truly in love until the end like in most relationships but I got a new job and I had to start working a lot more because I have a lot more bills than a normal 16 year old. I met this guy at work, he’s a really sweet guy, we hang out a lot and he knows that I have feelings for him but we have an age difference. He’s 20 and I’m 16, I feel like I’m a bad person for being into someone so soon after just getting out of a relationship but I don’t know what to do about the guy I have feelings for now. Someone please try and help me.