It is best to avoid thinking that you should be at a certain place in your life or you should have had a certain experience in your life such as love because you are an adult.
Everyone moves at a certain pace.
Not everyone is going to get to experience love at the same time or stage in life.
You should assess how your relationship with him has been so far.
If you have not been happy about something in particular but you have never told him about it, it would be best to talk about it first before anything else.
Becoming distant in order to show that you are unhappy about something is actually not going to help your situation.