Meeting my baby daddy’s girlfriend

My son is 14 months and his father sees him every Sunday. As the mom i asked the father to let me know where he takes my son because obviously my son doesn’t know how to fully talk or have conversations to tell me. His father refuses to tell me where he takes my son for 6 hours. He also believes that i don’t need to meet his girlfriend. We had a conversation when my son was a month old that when we got into a serious relationship that we should meet each others spouses so we can feel comfortable knowing who our son is around. Also to know that the other parents gf/bf is not harming our child in anyway. I went to court but the petition apparently is going to take around a year to process because of Covid. I did tell the father if he refuses to tell me where he takes my son that he shouldn’t take him anymore because i always communicate to him where I take my baby. Opinions? Do you believe he shouldn’t tell me or that I’m right that he should tell me? And should I meet the girlfriend to feel comfortable knowing that my son is with someone safe. I don’t have any relationship feelings towards my baby’s father and i could care less who he’s with and i won’t contact the girlfriend unless he has my baby and does not answer my call or message.