I think it is important I say this.
Roman Catholics are Roman Catholics.
Protestants are protestants.
We didn't protest 400 years ago for some silly reason or small difference. These were differences that effect foundational doctrine and lead to issues regarding what is most important: The person of Christ and His authority, Our salvation and so on.
I am disappointed that so many of us Protestants know little of why we had to protest and break away in the first place. The Reformers would have struggled in vain!
We have to know some things. There are simply too many mis-understandings due to lack of plain and proper knowledge. Either we read a little and assume, or we don't read at all.
You have to learn and find out for yourself. We have detailed records of what happened during the Reformation where we broke away... please, do go and read. Ask your Church leaders, not your friend but your Pastor.
And if you do not wish to read up history, please compare our doctrine/teachings with the RC teachings. How? Using the perfect and undeniable truth, the Bible.
That said, please do not mis-understand me. I'm not against the RC, in fact, I have RC friends. However, when it comes to fundamental doctrines of the Christian Faith, I must draw a line between what is acceptable and what is not...and stand by it. I understand it will be the same for the RC.