Can my ex take my kids from me for dating a level one sex offender who is no longer on supervision?

If the children are in any way exposed to the sex offender (e.g. he's at your house when the kids are there) the father has a basis to go to court and ask for limitations on that. If the sex offender is living with you, the father can ask for a change in the children's residence so as to end any exposure to this person. It is a basis for a modification of the parenting plan.

Possibly, the statute reads that if you choose to reside with a sex offender, your contact with the children MUST be restricted. You need to make a choice, what is more important, your kids or your dating life? Even if you do not live with him, the Court will not be impressed one little bit with you by putting your children at risk.