We had all had a little to drink, not enough to be drunk but enough that we were in good spirits and joking around allot by this time. The kids had already been put into bed when somehow the subject of his being the sperm donor and how they would explain that to the kids when they get older came up. The last New Years before we all got put on a multi-year quarantine I was attending a new years eve party with my friends and their sperm donor was also there. I should also mention, he was still a virgin due to being aromantic (and possible also asexual? I never really dug too deep into those details so I’m not really sure.)
The kids were both around 2-3 at this time so they didn’t really understand anything about how they were conceived yet.
However, my friends have many times told me he is great about welcoming time with the kids but never being too pushy or make them feel uncomfortable about his visiting, and that the kids love him when he comes to babysit them. While I always knew he still visited my friends and their kids on occasion I’ve only met him a few times personally and so don’t know him all that well. My friends, a lesbian couple, ended up picking a man friend of theirs as a sperm donor for their two kids.