Have Relationship Questions? Ask a Counselor for Answers ASAP
Right now you don't have that intuition because all you can see is Marcel even when you date other people that is why it's so important for you to make the break from him or at least be able to work with him without thinking of him staying the night at your house or calling him for other things other than work related situations. It's very important for the hobbies to be your thing to get away from everything and no you shouldn't share those things with him because as long as you have known him he should already know that you are interesting and a good person. I think you should continue your hobbies and take that trip without ANY communication with him, make that time your "You" time and no one else. This time will be important for you to break away and come back a new and improved you.