I think you are making the right decision to date other people b/c this R does not seem to be fulfilling for you.
I think perhaps you need to figure out what you want from an R. Different people have different needs for emotional intimacy. If we know what we want, it is easier to figure out if you and the R are compatible.
There is also that variable where people change what they want over time or as they get to know the other person better.
For example, for the past 5 years I have been saying that I want an arm's length P - that at a minimum lives next door and does not invade my space. Recently I have decided that I want more. If I was already involved with someone based on what I wanted before - that may have become an issue today. Of course the other person may also have evolving needs...