The background in brief is me and exP separated 2 years ago after 11 years together. we have a son born 2002, exP is named on birth certificate.
I understand as we were never married and birth was registered in 2002 that father has no parental responsibility - is this correct.
My main query now is that he wants ds to meet his new gf, ds has severe special needs and I can't see how it is in his best interests to meet her, it will just distress him unnecessarily which will have a negative effect on his well being. Can I stop exP from introducing gf to ds?