g'day mate,dont worry to much about it,love is love doesnt have to be a sexual or together thing
i split up with my ex close to 5yrs ago & we love each other more & respect each other more now than we ever did.
we have 2 children that i have for a year & then she has them the following then i have them & so on.
we dont make plans of such for holidays or anything if one wants to take them where ever they doits pretty simple really.

i would never take my ex back but thats just me everyone is different
nothing against my ex either she is a great gal,nothing bad against her at all
at the end of the day mate we are just men & women.
you have to make the choice.but dont do it just because you have a child together do it for the right reason that you do genuinely love each other