Joe Pressil, 36, said he discovered his former girlfriend's action when he received a receipt in the mail from a fertility clinic indicating himself as the patient, KPRC-TV, Houston, reported.
"Actually, I couldn't believe it could be done. I was very, very devastated. I couldn't believe that this fertility clinic could actually do this without my consent, or without my even being there," Pressil said, adding artificial insemination is against his religious beliefs.
Pressil's ex-girlfriend sued for and was granted child support after blood tests confirmed he is the father.
"That's a violation of myself, to what I believe in, to my religion, and just to my manhood," Pressil said.
"It's not what you're thinking when you're in a relationship," said Jason Gibson, Pressil's attorney. "That's not what most people are thinking, that their partner is going to get a special condom, use that condom as soon as you're done having sex, run off to the fertility clinic to go have an IVF procedure. That's certainly not what my client was thinking," Gibson said.
The ex-girlfriend's attorney, Derek Deyon, said Pressil filed suit to avoid paying child support.
"That's exactly what this is about," said Deyon, who said his client denies taking semen from a used condom to get pregnant.
Notable deaths of 2014 [PHOTOS]
Cyclist struck and dragged underneath car