dealing with someone with no kids

I have two kids & im dealing with someone with no kids .. im constantly worryin how often should I see him or will it end if we dont see each other enough .. right now we usually see eachother 4x a month for the last 6 months idk if thats enough or a little smh my kids are still small so its not that easy.. he’s understanding but i feel he goin to meet someone who is always available everyday.. how do ya cope with this? how often ya see each other ?