Should i leave

I was mates with my so and we was made homeless and ended up moving in together and became fuck buddies put it politly a year later we ended up becoming official.4 years laterwe have our own house a fur baby but for me its my first relationshiop for him hes had several.i became poasesive and worried when he went out i became unconfident in the way i look as his exs were good looking.i drove us apart i had serious depression and hes now sleeping in the spare room we do ocassionly sleep together and do have cuddles etx he does still talk about kids marriage etx but i want to know how to make things better how do i prove i want us back without being overpowering or should i face facts its over??