treated disrespectfully in front of my kids

i pay childsupport for 2 children. but the mother also has another child with another man. to which this child is 14 years old. but she also has a boyfriend. to where earlier today he treated me with such disrespect in front of my 2 kids. do i need to take it or can i do something about it

[tbyte]

Yes, you can do something about it.
You can explain to your children that the boy was rude and disrespectful, and that such behavior is a sign of immaturity and unacceptable, and you can let them know that you expect them to aspire to higher standards of conduct.
Then, you can send the young man a thank-you note for giving your children such an excellent object lesson on what a jack-ass acts like.
Rise above this, and take your children with you.