Absolutely.
Honesty is always the right course of action when expressing your feelings to someone.
The best way to do that is to be as respectful as possible.
If you can formulate your thoughts, feelings, and emotions into clear and concise language there isn’t much else that you can do.
Unfortunately, the way people respond to your words isn’t under your control.
You convey your opinions in the most thoughtful and respectful way and that person still might take offense.
Your job is to communicate as best as you possibly can.
Don’t worry so much about how people will react because that isn’t under your control.