Is it okay for A Catholic going to Both Christian and Catholic church?

Im a Catholic and I started going to a Catholic church almost a year now, Ive done my communion,Confirmation and Baptism on My Parish in Catholicism. I have a best friend who's Christian and he invited me to go to his church yestarday and I did and it was great! people really liked me there so I was wondering is it okay for me as a catholic to go to 2 churches? I go to catholic church every sunday and Im going to start going to a Christian on Wensday and Fridays. please let me know thank you!