[33girl]

It depends if you're just in different places in your lives and don't have a lot in common at the moment (ex. they are in Babyland and you aren't) or if they've become a truly toxic presence in your life.

If it's the first one, just tell a white lie - say you're really busy w/ work or whatever and you still value their friendship but you won't have as much time to hang out.

If it's the second, delete/block their phone number, email address and cut ties. If mutual friends ask what's up, just tell them it has nothing to do with them and as you don't want people taking sides you don't want to discuss it.