Does my daughters boyfriends mom need to know her son is sexually active?

My daughter recently turned 16. We have a close relationship, and for the most part, we talk about everything. Last year at the beginning of the pandemic, she met her boyfriend. Within a few months, she wanted to have a conversation in regards to sex. I asked her to wait. To make sure this was going to last more than a couple of weeks, months… Well, this last week, they made a year. And I saw the smiles and heard the giggles, and sure enough, she asked if we could talk, so I knew what was coming. She’s a straight-A kid, very responsible, and my only child. The boy is a very respectable, straight-A student as well. I guess they figured I was the easier parent to speak to. I told my daughter o would schedule an appointment for her to see her doctor and another appointment for a gym. I can at least do my part and get her prepared rather than have her do it behind my back and later on tell me she’s pregnant. However, I also said that I wanted to have a conversation with his mother in regards to it. He was not thrilled. My thoughts are if you’re old enough to have the sex you should be old enough to be able to talk about it. Thoughts? Advice? Guidance? Anything else I can consider or do

If he wants to tell her. Do not force him. They will stop trusting you and telling you things…