Am i overreacting and being insecure?

Back in 2018, my husband would go on the smule karaoke app. Message, flirt, and sing with women on there. Giving them emoji kisses. Ive talked to him many times about it, that if hes only going to use that app to flirt, and crush on other women, then he shouldnt be using it. He told me he will stop flirting and messaging them, but he will continue singing on that app. I used to use that app before, and he told me that if im ever going back to it, icant sing with other guys.

Just yesterday, he ask me to go buy some food from a certain restaurant, which was 30 mins from where we lived. And also told me to buy drinks, and some groceries. So took me 2 and a half hrs to do everything, with traffic.

He left his phone on the desk, was playing music on his phone, and i can hear him singing through the headphones. I decided to listen to it, and he was singing this song with a woman. About how beautiful she is, she takes his breath away, and her looks makes him fall in love with her.

I felt devalued and i felt like ive lost him to another woman. He made me go do those errands only because he was singing that song with another woman. He got mad that i felt that way, and told me to stop trying to start problems or else. I also found out that he have more than 2 accts on that app.

He pretended to delete that song from his page, but i found out he saved it on his phone. Now am i overreacting, or i have the right to feel this way? Is something wrong here?