Hi froggy21
You have to set some ground rules with this person. If you are after an exclusive relationship you have to make it very clear to him that either he becomes serious or you will have to find someone else. If you don't do this then don't expect anything more from your relationship with him than what you currently have.
Don't cry, don't regret and don't blame
Weak find the whip, willing find freedom
Towards the sun, carry your name
In warm hands you are given
Ask the wind for the way
Uncertainty's gone, your path will unravel
Accept all as it is and do not blame
God or the Devil
~Born to Live - Mavrik~