Did he text this message to you? If so then no reply is really needed. You can't stop him from filing and you shouldn't try to. But do make sure you're protected, you might want to consult a lawyer if you feel this is over your head.

Me: 60 w/ S18, D24, D27

M: 21 years; BD: 06-14-12; S: 09-10-12; D final: 03-17-14; XW:57