What do i do ?

I have a 3yr long relationship which started off as a fling but later we both got attached to each other. We don’t know if this is love but we know that we will not be able to make it to marriage due to multiple reasons. Because of this relationship/situationship I’m not able to proceed for arrange marriage also. I’m 30, and want to have a family. I have a very good prospect of arrange marriage but I’m unable to convince myself to take the leap of faith. It feels like I’m drained out and don’t want to invest in another relationship. What should i do ?