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.
This is why it is important that you don’t get so caught up in thinking that you should be at a certain place in your life when it comes to love because you are now an adult.
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.
He wants to know that he can trust her with his life, his dignity and with the relationship.
A guy would typically look at a woman for a long-term relationship when he knows that he can completely open himself up to her and not have to worry that she will betray his trust.
He may divulge information to her that he wouldn’t with most other people.
He may not look at his relationship with you as one that should lead to romance.
If you have been talking to this guy for a year and a half and you are still not together, it could be because he looks at your relationship with him in a totally different way from the way you have been looking at it.
Perhaps he has said a lot of sweet things to you in the last year and a half that has made you feel that he cares about you in a romantic way.
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. 
A woman who they feel that they can trust.