I was trying really hard to avoid giving the OP any specific advice on their personal life when I wrote my comment higher up, but now that you've posted I have to chime in: yes to everything you said.

Being a parent, much like being a married, doesn't mean you stop being your own person. Everybody needs time to do their own thing, away from their partner and children; as much as we love them we also need to take care of our own wants and needs.

So yes, absolutely, speak with your partner and figure out some time you both can step away guilt-free. And keep in mind that groups are more than willing to accommodate your needs.